diff --git a/context_manager/answers/change_directory.py b/context_manager/answers/change_directory.py
new file mode 100644
index 0000000..8c8ac62
--- /dev/null
+++ b/context_manager/answers/change_directory.py
@@ -0,0 +1,30 @@
+import os
+from contextlib import contextmanager
+
+
+def change_dir_without_context_manager(filename1, filename2):
+    cwd = os.getcwd()
+    os.chdir(filename1)
+    a = os.listdir()
+    os.chdir(cwd)
+
+    cwd = os.getcwd()
+    os.chdir(filename2)
+    b = os.listdir()
+    os.chdir(cwd)
+    return a + b
+
+
+@contextmanager
+def change_dir(filename):
+    try:
+        cwd = os.getcwd()
+        os.chdir(filename)
+        yield
+    finally:
+        os.chdir(cwd)
+
+
+def try_change_dir(filename):
+    with change_dir(filename):
+        return os.listdir()
diff --git a/context_manager/answers/context_manager.py b/context_manager/answers/context_manager.py
deleted file mode 100644
index 45115fd..0000000
--- a/context_manager/answers/context_manager.py
+++ /dev/null
@@ -1,77 +0,0 @@
-import os
-from contextlib import contextmanager
-
-def simple_open_and_write_without_context_manager(filename):
-    f = open(filename ,'w')
-    f.write('simple open and write done!')
-    f.close()
-    if(f.closed):
-        return True
-    else:
-        return False
-
-def simple_open_and_write_with_context_manager(filename):
-    with open(filename, 'w') as f:
-        f.write('write with context manager done!')
-    if(f.closed):
-        return True
-    else:
-        return False
-        
-
-@contextmanager
-def open_file(file, mode):
-    f = open(file, mode)
-    yield f
-    f.close()
-        
-def check_open_file(filename):
-    with open_file(filename, 'w') as f:
-        f.write('Lorem ipsum dolor sit amet, consectetur adipiscing elit.')
-    if(f.closed):
-        return True
-    else:
-        return False
-        
-
-def change_dir_without_context_manager(filename1, filename2):
-    cwd = os.getcwd()
-    os.chdir(filename1)
-    a = os.listdir()
-    os.chdir(cwd)
-    
-    cwd = os.getcwd()
-    os.chdir(filename2)
-    b = os.listdir()
-    os.chdir(cwd)
-    return a + b
-
-@contextmanager
-def change_dir(filename):
-    try:
-        cwd = os.getcwd()
-        os.chdir(filename)
-        yield
-    finally:
-        os.chdir(cwd)
-
-def try_change_dir(filename):
-    with change_dir(filename):
-        return os.listdir()
-
-def read_file(filename):
-    with open(filename, 'r') as f:
-        for line in f:
-            return format(line)
-            
-simple_open_and_write_without_context_manager('first.txt')
-simple_open_and_write_with_context_manager('second.txt')
-check_open_file('third.txt')
-print(change_dir_without_context_manager('file_one','file_two'))
-print(change_dir_without_context_manager('file_one','file_one'))
-print(change_dir_without_context_manager('file_two','file_two'))
-print(try_change_dir('file_one'))
-print(try_change_dir('file_two'))
-read_file('first.txt')
-read_file('second.txt')
-read_file('third.txt')
diff --git a/context_manager/answers/context_manager_as_class.py b/context_manager/answers/context_manager_as_class.py
new file mode 100644
index 0000000..9058cc9
--- /dev/null
+++ b/context_manager/answers/context_manager_as_class.py
@@ -0,0 +1,17 @@
+class File(object):
+    def __init__(self, file_name, method):
+        self.file_obj = open(file_name, method)
+    def __enter__(self):
+        return self.file_obj
+    def __exit__(self, type, value, traceback):
+        self.file_obj.close()
+
+def check(filename):
+    with File(filename, 'w') as opened_file:
+        opened_file.write('Yeah! You can write context manager as class)')
+
+
+def read_file(filename):
+    with open(filename, 'r') as f:
+        for line in f:
+            return format(line)
\ No newline at end of file
diff --git a/context_manager/change_directory.py b/context_manager/change_directory.py
new file mode 100644
index 0000000..293fd34
--- /dev/null
+++ b/context_manager/change_directory.py
@@ -0,0 +1,33 @@
+import os
+from contextlib import contextmanager
+
+
+def change_dir_without_context_manager(filename1, filename2):
+   """
+   Changes directory from pwd to pwd/filename.
+   :param filename1: name of first folder
+   :param filename2: name of second folder
+   :return: list if files in filename1 and filename2
+   """
+
+
+"""
+With context manager.
+"""
+
+
+@contextmanager
+def change_dir(filename):
+   """
+   Changes directory from pwd to pwd/filename.
+   :param filename: name of folder
+   """
+
+
+def try_change_dir(filename):
+    """
+    Uses change_dir().
+    :param filename: name of folder
+    :return: list of files in folder
+    """
+
diff --git a/context_manager/context_manager_as_class.py b/context_manager/context_manager_as_class.py
new file mode 100644
index 0000000..8759b18
--- /dev/null
+++ b/context_manager/context_manager_as_class.py
@@ -0,0 +1,16 @@
+class File(object):
+    """
+    Context manager class with '__init__', '__enter__', '__exit__' methods that opens and closes file.
+    """
+
+def check(filename):
+    """
+    Writes 'Yeah! You can write context manager as class)') into filename with File class.
+    :param filename: txt file
+    """
+
+
+def read_file(filename):
+    with open(filename, 'r') as f:
+        for line in f:
+            return format(line)
\ No newline at end of file
diff --git a/context_manager/first.txt b/context_manager/first.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/context_manager/instruction.md b/context_manager/instruction.md
index 234b424..52a3eb7 100644
--- a/context_manager/instruction.md
+++ b/context_manager/instruction.md
@@ -2,7 +2,7 @@
 
 1. Look at the file write_into_file.py
 
-2. Look at the tests in tests folter 
+2. Look at the tests in tests folder 
 
 3. Run tests with command:
 
@@ -18,4 +18,22 @@
 
 7. Congratulations, you have passed first level. Commit and push your changes. 
 
-### LEVEL-2
\ No newline at end of file
+### LEVEL-2
+
+1. Look at the file change_directory.py
+
+2. Look at the test_change_directory.py in tests folder 
+
+3. Run tests with command:
+
+    ```python3 -m unittest tests/test_change_directory.py```
+    
+   As you see all your tests are failed
+
+4. Now, complete the functions in change_directory.py
+
+5. Run tests and all of them should be passed.
+
+6. Compare your answer with mine located in answers/change_directory.py
+
+7. Congratulations, you have passed second level. Commit and push your changes.
\ No newline at end of file
diff --git a/context_manager/second.txt b/context_manager/second.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/context_manager/tests/test_change_directory.py b/context_manager/tests/test_change_directory.py
new file mode 100644
index 0000000..10f96d2
--- /dev/null
+++ b/context_manager/tests/test_change_directory.py
@@ -0,0 +1,27 @@
+from unittest import TestCase
+from change_directory import (
+    change_dir_without_context_manager,
+    try_change_dir
+)
+
+class ContextManagerTest(TestCase):
+    def test_change_dir_without(self):
+        result = change_dir_without_context_manager('file_one','file_two')
+        self.assertEqual(result, ['love.txt', 'context.txt', 'I.txt', 'manager.txt', 'love.txt', 'and.txt', 'I.txt', 'beshbarmak.txt'])
+
+    def test_change_dir_without1(self):
+        result = change_dir_without_context_manager('file_one', 'file_one')
+        self.assertEqual(result, ['love.txt', 'context.txt', 'I.txt', 'manager.txt', 'love.txt', 'context.txt', 'I.txt', 'manager.txt'])
+
+    def test_change_dir_without2(self):
+        result = change_dir_without_context_manager('file_two', 'file_two')
+        self.assertEqual(result, ['love.txt', 'and.txt', 'I.txt', 'beshbarmak.txt', 'love.txt', 'and.txt', 'I.txt', 'beshbarmak.txt'])
+
+
+    def test_change_dir_with(self):
+        result = try_change_dir('file_one')
+        self.assertEqual(result, ['love.txt', 'context.txt', 'I.txt', 'manager.txt'])
+
+    def test_change_dir_with1(self):
+        result = try_change_dir('file_two')
+        self.assertEqual(result,['love.txt', 'and.txt', 'I.txt', 'beshbarmak.txt'])
\ No newline at end of file
diff --git a/context_manager/tests/test_context_manager_as_class.py b/context_manager/tests/test_context_manager_as_class.py
new file mode 100644
index 0000000..9ee9031
--- /dev/null
+++ b/context_manager/tests/test_context_manager_as_class.py
@@ -0,0 +1,11 @@
+from unittest import TestCase
+from context_manager_as_class import (
+    check,
+    read_file
+)
+
+class LevelOneTest(TestCase):
+    def test_write_with1(self):
+        check('first.txt')
+        result = read_file('first.txt')
+        self.assertEqual(result, 'Yeah! You can write context manager as class)')
\ No newline at end of file
diff --git a/context_manager/tests/test_write_into_file.py b/context_manager/tests/test_write_into_file.py
index 20890e2..5eef53e 100644
--- a/context_manager/tests/test_write_into_file.py
+++ b/context_manager/tests/test_write_into_file.py
@@ -6,7 +6,11 @@
     read_file
 )
 
+<<<<<<< HEAD
 class LevelOneTest(TestCase):
+=======
+class LevelTwoTest(TestCase):
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
     def test_write_without(self):
         result = write_without_context_manager('first.txt')
         self.assertEqual(result, True)
diff --git a/context_manager/third.txt b/context_manager/third.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/context_manager/write_into_file.py b/context_manager/write_into_file.py
index b74f912..6e79b0e 100644
--- a/context_manager/write_into_file.py
+++ b/context_manager/write_into_file.py
@@ -41,4 +41,4 @@ def check_open_file(filename):
 def read_file(filename):
     with open(filename, 'r') as f:
         for line in f:
-            return format(line)
\ No newline at end of file
+            return format(line)
diff --git a/docs/build/doctrees/context_manager.doctree b/docs/build/doctrees/context_manager.doctree
index cd44120..a19d8c7 100644
Binary files a/docs/build/doctrees/context_manager.doctree and b/docs/build/doctrees/context_manager.doctree differ
diff --git a/docs/build/doctrees/environment.pickle b/docs/build/doctrees/environment.pickle
index 4a7f457..d2674eb 100644
Binary files a/docs/build/doctrees/environment.pickle and b/docs/build/doctrees/environment.pickle differ
diff --git a/docs/build/html/_sources/context_manager.rst.txt b/docs/build/html/_sources/context_manager.rst.txt
index 829d996..8602bf2 100644
--- a/docs/build/html/_sources/context_manager.rst.txt
+++ b/docs/build/html/_sources/context_manager.rst.txt
@@ -24,10 +24,36 @@ or as class by using magic functions::
 
 We want you to pass three levels for a better understanding of **context manager**
 
+<<<<<<< HEAD
 
 
 LEVEL-1
 -------
+=======
+Context manager as class
+------------------------
+
+1. Look at the file context_manager_as_class.py
+
+2. Look at the test_context_manager_as_class.py in tests folder
+
+3. Run tests with command::
+
+    python3 -m unittest tests/test_context_manager_as_class.py
+
+   As you see all your tests are failed
+
+4. Now, complete the functions in context_manager_as_class.py
+
+5. Run tests and all of them should be passed.
+
+6. Compare your answer with mine located in answers/change_directory.py
+
+7. Congratulations, you have passed first level. Commit and push your changes.
+
+Write into file
+---------------
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
 
 1. Look at the file write_into_file.py
 
@@ -35,7 +61,11 @@ LEVEL-1
 
 3. Run tests with command::
 
+<<<<<<< HEAD
     python3 -m unittest tests/tests_for_level_one.py
+=======
+    python3 -m unittest tests/tests_write_into_file.py
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
 
    As you see all your tests are failed
 
@@ -47,6 +77,28 @@ LEVEL-1
 
 7. Congratulations, you have passed first level. Commit and push your changes.
 
+<<<<<<< HEAD
 LEVEL-2
 -------
 
+=======
+Change directory
+----------------
+1. Look at the file change_directory.py
+
+2. Look at the test_change_directory.py in tests folder
+
+3. Run tests with command::
+
+    python3 -m unittest tests/test_change_directory.py
+
+   As you see all your tests are failed
+
+4. Now, complete the functions in change_directory.py
+
+5. Run tests and all of them should be passed.
+
+6. Compare your answer with mine located in answers/change_directory.py
+
+7. Congratulations, you have passed second level. Commit and push your changes.
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
diff --git a/docs/build/html/context_manager.html b/docs/build/html/context_manager.html
index 7228de1..a6ba890 100644
--- a/docs/build/html/context_manager.html
+++ b/docs/build/html/context_manager.html
@@ -85,7 +85,7 @@
 <li class="toctree-l1"><a class="reference internal" href="decorators.html">Decorators</a></li>
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Context manager</a><ul>
 <li class="toctree-l2"><a class="reference internal" href="#level-1">LEVEL-1</a></li>
-<li class="toctree-l2"><a class="reference internal" href="#level-2">LEVEL-2</a></li>
+<li class="toctree-l2"><a class="reference internal" href="#write-into-file">Write into file</a></li>
 </ul>
 </li>
 </ul>
@@ -171,31 +171,73 @@ <h1>Context manager<a class="headerlink" href="#context-manager" title="Permalin
 </pre></div>
 </div>
 <p>We want you to pass three levels for a better understanding of <strong>context manager</strong></p>
+<p>&lt;&lt;&lt;&lt;&lt;&lt;&lt; HEAD</p>
 <div class="section" id="level-1">
 <h2>LEVEL-1<a class="headerlink" href="#level-1" title="Permalink to this headline">¶</a></h2>
 <ol class="arabic">
-<li><p class="first">Look at the file write_into_file.py</p>
+<li><p class="first">Look at the file context_manager_as_class.py</p>
 </li>
-<li><p class="first">Look at the tests in tests folter</p>
+<li><p class="first">Look at the test_context_manager_as_class.py in tests folder</p>
 </li>
 <li><p class="first">Run tests with command:</p>
-<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">tests_for_level_one</span><span class="o">.</span><span class="n">py</span>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">test_context_manager_as_class</span><span class="o">.</span><span class="n">py</span>
 </pre></div>
 </div>
 <p>As you see all your tests are failed</p>
 </li>
-<li><p class="first">Now, complete the functions in write_into_file.py</p>
+<li><p class="first">Now, complete the functions in context_manager_as_class.py</p>
 </li>
 <li><p class="first">Run tests and all of them should be passed.</p>
 </li>
-<li><p class="first">Compare your answer with mine located in answers/write_into_file.py</p>
+<li><p class="first">Compare your answer with mine located in answers/change_directory.py</p>
 </li>
 <li><p class="first">Congratulations, you have passed first level. Commit and push your changes.</p>
 </li>
 </ol>
 </div>
-<div class="section" id="level-2">
-<h2>LEVEL-2<a class="headerlink" href="#level-2" title="Permalink to this headline">¶</a></h2>
+<div class="section" id="write-into-file">
+<h2>Write into file<a class="headerlink" href="#write-into-file" title="Permalink to this headline">¶</a></h2>
+<p>&gt;&gt;&gt;&gt;&gt;&gt;&gt; cdb42cc1efb71900fdcfa9b0e9831c25313b30ee</p>
+<ol class="arabic simple">
+<li>Look at the file write_into_file.py</li>
+<li>Look at the tests in tests folter</li>
+<li>Run tests with command:</li>
+</ol>
+<dl class="docutils">
+<dt>&lt;&lt;&lt;&lt;&lt;&lt;&lt; HEAD</dt>
+<dd>python3 -m unittest tests/tests_for_level_one.py</dd>
+</dl>
+<blockquote>
+<div>As you see all your tests are failed</div></blockquote>
+<ol class="arabic simple" start="4">
+<li>Now, complete the functions in write_into_file.py</li>
+<li>Run tests and all of them should be passed.</li>
+<li>Compare your answer with mine located in answers/write_into_file.py</li>
+<li>Congratulations, you have passed first level. Commit and push your changes.</li>
+</ol>
+<p>&lt;&lt;&lt;&lt;&lt;&lt;&lt; HEAD
+LEVEL-2
+——-</p>
+<ol class="arabic">
+<li><p class="first">Look at the file change_directory.py</p>
+</li>
+<li><p class="first">Look at the test_change_directory.py in tests folder</p>
+</li>
+<li><p class="first">Run tests with command:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">test_change_directory</span><span class="o">.</span><span class="n">py</span>
+</pre></div>
+</div>
+<p>As you see all your tests are failed</p>
+</li>
+<li><p class="first">Now, complete the functions in change_directory.py</p>
+</li>
+<li><p class="first">Run tests and all of them should be passed.</p>
+</li>
+<li><p class="first">Compare your answer with mine located in answers/change_directory.py</p>
+</li>
+</ol>
+<p>7. Congratulations, you have passed second level. Commit and push your changes.
+&gt;&gt;&gt;&gt;&gt;&gt;&gt; cdb42cc1efb71900fdcfa9b0e9831c25313b30ee</p>
 </div>
 </div>
 
diff --git a/docs/build/html/context_manager.html~cdb42cc1efb71900fdcfa9b0e9831c25313b30ee b/docs/build/html/context_manager.html~cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
new file mode 100644
index 0000000..ef0bf60
--- /dev/null
+++ b/docs/build/html/context_manager.html~cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
@@ -0,0 +1,303 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+  <meta charset="utf-8">
+  
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  
+  <title>Context manager &mdash; Python-TDD 0.0.1 documentation</title>
+  
+
+  
+  
+  
+  
+
+  
+
+  
+  
+    
+
+  
+
+  <link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+  <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    <link rel="index" title="Index" href="genindex.html" />
+    <link rel="search" title="Search" href="search.html" />
+    <link rel="prev" title="Decorators" href="decorators.html" /> 
+
+  
+  <script src="_static/js/modernizr.min.js"></script>
+
+</head>
+
+<body class="wy-body-for-nav">
+
+   
+  <div class="wy-grid-for-nav">
+
+    
+    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+      <div class="wy-side-scroll">
+        <div class="wy-side-nav-search">
+          
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+          
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+          
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+          
+            
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+<div role="search">
+  <form id="rtd-search-form" class="wy-form" action="search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" />
+    <input type="hidden" name="check_keywords" value="yes" />
+    <input type="hidden" name="area" value="default" />
+  </form>
+</div>
+
+          
+        </div>
+
+        <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+          
+            
+            
+              
+            
+            
+              <ul class="current">
+<li class="toctree-l1"><a class="reference internal" href="introduction.html">Hello Python, Hi TDD!</a></li>
+<li class="toctree-l1"><a class="reference internal" href="baby_steps.html">Baby steps</a></li>
+<li class="toctree-l1"><a class="reference internal" href="magic_functions.html">Magic functions</a></li>
+<li class="toctree-l1"><a class="reference internal" href="fibonacci_numbers.html">Fibonacci numbers</a></li>
+<li class="toctree-l1"><a class="reference internal" href="decorators.html">Decorators</a></li>
+<li class="toctree-l1 current"><a class="current reference internal" href="#">Context manager</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="#context-manager-as-class">Context manager as class</a></li>
+<li class="toctree-l2"><a class="reference internal" href="#write-into-file">Write into file</a></li>
+<li class="toctree-l2"><a class="reference internal" href="#change-directory">Change directory</a></li>
+</ul>
+</li>
+</ul>
+
+            
+          
+        </div>
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+    
+      <li><a href="index.html">Docs</a> &raquo;</li>
+        
+      <li>Context manager</li>
+    
+    
+      <li class="wy-breadcrumbs-aside">
+        
+            
+            <a href="_sources/context_manager.rst.txt" rel="nofollow"> View page source</a>
+          
+        
+      </li>
+    
+  </ul>
+
+  
+  <hr/>
+</div>
+          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
+           <div itemprop="articleBody">
+            
+  <div class="section" id="context-manager">
+<h1>Context manager<a class="headerlink" href="#context-manager" title="Permalink to this headline">¶</a></h1>
+<p><strong>ToDo:</strong> Read about context manager. Pass three levels for a better understanding.</p>
+<p><strong>Learn:</strong> Context manager</p>
+<p><strong>Working directory:</strong>  <a class="reference external" href="https://github.com/An4ik/Python-TDD/tree/master/context_manager">**context_manager**</a></p>
+<p><strong>Context managers</strong> are a way of allocating and releasing some sort of resource exactly where you need it. The most widely used example of context managers is the ‘with’ statement.</p>
+<p>If you forget to close the file or let’s say the database, it will later lead to big consequences. But with context manager, you don’t need to remember this, it will close everything for you.</p>
+<p>We can implement context manager as generator:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">contextlib</span> <span class="k">import</span> <span class="n">contextmanager</span>
+<span class="nd">@contextmanager</span>
+</pre></div>
+</div>
+<p>or as class by using magic functions:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="fm">__init__</span>
+<span class="fm">__enter__</span>
+<span class="fm">__exit__</span>
+</pre></div>
+</div>
+<p>We want you to pass three levels for a better understanding of <strong>context manager</strong></p>
+<div class="section" id="context-manager-as-class">
+<h2>Context manager as class<a class="headerlink" href="#context-manager-as-class" title="Permalink to this headline">¶</a></h2>
+<ol class="arabic">
+<li><p class="first">Look at the file context_manager_as_class.py</p>
+</li>
+<li><p class="first">Look at the test_context_manager_as_class.py in tests folder</p>
+</li>
+<li><p class="first">Run tests with command:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">test_context_manager_as_class</span><span class="o">.</span><span class="n">py</span>
+</pre></div>
+</div>
+<p>As you see all your tests are failed</p>
+</li>
+<li><p class="first">Now, complete the functions in context_manager_as_class.py</p>
+</li>
+<li><p class="first">Run tests and all of them should be passed.</p>
+</li>
+<li><p class="first">Compare your answer with mine located in answers/change_directory.py</p>
+</li>
+<li><p class="first">Congratulations, you have passed first level. Commit and push your changes.</p>
+</li>
+</ol>
+</div>
+<div class="section" id="write-into-file">
+<h2>Write into file<a class="headerlink" href="#write-into-file" title="Permalink to this headline">¶</a></h2>
+<ol class="arabic">
+<li><p class="first">Look at the file write_into_file.py</p>
+</li>
+<li><p class="first">Look at the tests in tests folter</p>
+</li>
+<li><p class="first">Run tests with command:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">tests_write_into_file</span><span class="o">.</span><span class="n">py</span>
+</pre></div>
+</div>
+<p>As you see all your tests are failed</p>
+</li>
+<li><p class="first">Now, complete the functions in write_into_file.py</p>
+</li>
+<li><p class="first">Run tests and all of them should be passed.</p>
+</li>
+<li><p class="first">Compare your answer with mine located in answers/write_into_file.py</p>
+</li>
+<li><p class="first">Congratulations, you have passed first level. Commit and push your changes.</p>
+</li>
+</ol>
+</div>
+<div class="section" id="change-directory">
+<h2>Change directory<a class="headerlink" href="#change-directory" title="Permalink to this headline">¶</a></h2>
+<ol class="arabic">
+<li><p class="first">Look at the file change_directory.py</p>
+</li>
+<li><p class="first">Look at the test_change_directory.py in tests folder</p>
+</li>
+<li><p class="first">Run tests with command:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">unittest</span> <span class="n">tests</span><span class="o">/</span><span class="n">test_change_directory</span><span class="o">.</span><span class="n">py</span>
+</pre></div>
+</div>
+<p>As you see all your tests are failed</p>
+</li>
+<li><p class="first">Now, complete the functions in change_directory.py</p>
+</li>
+<li><p class="first">Run tests and all of them should be passed.</p>
+</li>
+<li><p class="first">Compare your answer with mine located in answers/change_directory.py</p>
+</li>
+<li><p class="first">Congratulations, you have passed second level. Commit and push your changes.</p>
+</li>
+</ol>
+</div>
+</div>
+
+
+           </div>
+           
+          </div>
+          <footer>
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+    <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
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diff --git a/docs/build/html/index.html b/docs/build/html/index.html
index 8d6201c..e0df0d3 100644
--- a/docs/build/html/index.html
+++ b/docs/build/html/index.html
@@ -177,7 +177,7 @@ <h1>Modulus<a class="headerlink" href="#modulus" title="Permalink to this headli
 </li>
 <li class="toctree-l1"><a class="reference internal" href="context_manager.html">Context manager</a><ul>
 <li class="toctree-l2"><a class="reference internal" href="context_manager.html#level-1">LEVEL-1</a></li>
-<li class="toctree-l2"><a class="reference internal" href="context_manager.html#level-2">LEVEL-2</a></li>
+<li class="toctree-l2"><a class="reference internal" href="context_manager.html#write-into-file">Write into file</a></li>
 </ul>
 </li>
 </ul>
diff --git a/docs/build/html/searchindex.js b/docs/build/html/searchindex.js
index bb9e44f..6bf1dec 100644
--- a/docs/build/html/searchindex.js
+++ b/docs/build/html/searchindex.js
@@ -1 +1 @@
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diff --git a/docs/source/context_manager.rst b/docs/source/context_manager.rst
index 829d996..8602bf2 100644
--- a/docs/source/context_manager.rst
+++ b/docs/source/context_manager.rst
@@ -24,10 +24,36 @@ or as class by using magic functions::
 
 We want you to pass three levels for a better understanding of **context manager**
 
+<<<<<<< HEAD
 
 
 LEVEL-1
 -------
+=======
+Context manager as class
+------------------------
+
+1. Look at the file context_manager_as_class.py
+
+2. Look at the test_context_manager_as_class.py in tests folder
+
+3. Run tests with command::
+
+    python3 -m unittest tests/test_context_manager_as_class.py
+
+   As you see all your tests are failed
+
+4. Now, complete the functions in context_manager_as_class.py
+
+5. Run tests and all of them should be passed.
+
+6. Compare your answer with mine located in answers/change_directory.py
+
+7. Congratulations, you have passed first level. Commit and push your changes.
+
+Write into file
+---------------
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
 
 1. Look at the file write_into_file.py
 
@@ -35,7 +61,11 @@ LEVEL-1
 
 3. Run tests with command::
 
+<<<<<<< HEAD
     python3 -m unittest tests/tests_for_level_one.py
+=======
+    python3 -m unittest tests/tests_write_into_file.py
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee
 
    As you see all your tests are failed
 
@@ -47,6 +77,28 @@ LEVEL-1
 
 7. Congratulations, you have passed first level. Commit and push your changes.
 
+<<<<<<< HEAD
 LEVEL-2
 -------
 
+=======
+Change directory
+----------------
+1. Look at the file change_directory.py
+
+2. Look at the test_change_directory.py in tests folder
+
+3. Run tests with command::
+
+    python3 -m unittest tests/test_change_directory.py
+
+   As you see all your tests are failed
+
+4. Now, complete the functions in change_directory.py
+
+5. Run tests and all of them should be passed.
+
+6. Compare your answer with mine located in answers/change_directory.py
+
+7. Congratulations, you have passed second level. Commit and push your changes.
+>>>>>>> cdb42cc1efb71900fdcfa9b0e9831c25313b30ee