diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index a5ba0ac..bbf4b88 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,12 +1,15 @@
 # Pull Request
+
 ## Checklist
+
 - [ ] 해당 PR 관련 이슈가 작성되었나요?
 - [ ] 테스트 코드를 작성하였나요?
 - [ ] 기존에 작성된 테스트코드가 정상적으로 작동하나요? (`tests/test*.py`)
 
 ## 1. 해당 PR은 어떤 내용인가요?
+
 <!-- 해당 PR이 어떠한 내용인지 상세하게 명시 부탁드립니다. -->
 
 ## 2. PR과 관련된 이슈가 있나요?
-<!-- PR이 참고하고 있는 이슈가 있다면 이슈번호를 `#123` 형식으로 남겨주세요. 여러 개의 이슈가 포함되어도 됩니다.-->
 
+<!-- PR이 참고하고 있는 이슈가 있다면 이슈번호를 `#123` 형식으로 남겨주세요. 여러 개의 이슈가 포함되어도 됩니다.-->
diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 539f059..292260f 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -5,35 +5,34 @@ name: Pytest
 # Controls when the action will run. Triggers the workflow on push or pull request
 # events but only for the master branch
 on:
-    pull_request:
-        branches:
-            - master
-            - dev
-            - refactoring
+  pull_request:
+    branches:
+      - master
+      - dev
+      - refactoring
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
-    Pytest:
-        # The type of runner that the job will run on
-        runs-on: ubuntu-latest
-        strategy:
-            matrix:
-                python-version:
-                    - 3.x
-        timeout-minutes: 60
+  Pytest:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version:
+          - 3.x
+    timeout-minutes: 60
 
-        # Steps represent a sequence of tasks that will be executed as part of the job
-        steps:
-            # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-            - uses: actions/checkout@v2
-              with:
-                  ref: ${{ github.event.pull_request.head.sha }}
-
-            - name: Prerequeist
-              run: |
-                  pip3 install --upgrade pip setuptools
-                  pip3 install pytest pytest-cov --no-cache --user
-                  pip3 install -r requirements.txt --user
-            - name: test with pytest
-              run: python3 -m pytest -s -v --cov-report=xml --cov=./ tests/test*.py
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
 
+      - name: Prerequeist
+        run: |
+          pip3 install --upgrade pip setuptools
+          pip3 install pytest pytest-cov --no-cache --user
+          pip3 install -r requirements.txt --user
+      - name: test with pytest
+        run: python3 -m pytest -s -v --cov-report=xml --cov=./ tests/test*.py
diff --git a/.gitignore b/.gitignore
index 6769e21..68bc17f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -157,4 +157,4 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
\ No newline at end of file
+#.idea/
diff --git a/README.md b/README.md
index aee568b..503182c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,10 @@
 # soynlp
 
-Renewing ...
\ No newline at end of file
+Renewing ...
+
+## Install
+
+```
+pipx install poetry==1.8.0
+poetry install
+```
diff --git a/data/loader.py b/data/loader.py
index 2e5ae1e..695e568 100644
--- a/data/loader.py
+++ b/data/loader.py
@@ -1,14 +1,13 @@
 import os
 from glob import glob
 
-
 installpath = os.path.abspath(os.path.dirname(__file__))
 
 
-def load(idx='134963', mode='norm', max_samples=-1):
+def load(idx="134963", mode="norm", max_samples=-1):
     """
     Args:
-	idx: str
+        idx: str
             movie idx
         mode: str
             `mode` = 'norm' or not
@@ -21,17 +20,16 @@ def load(idx='134963', mode='norm', max_samples=-1):
         scores: list of int
             Annotated scores
     """
-    suffix = '' if mode != 'norm' else '_norm'
-    paths = glob(f'{installpath}/{idx}{suffix}.txt')
+    suffix = "" if mode != "norm" else "_norm"
+    paths = glob(f"{installpath}/{idx}{suffix}.txt")
     if not paths:
-        raise ValueError(f'Not found file. Check idx {idx}')
-    with open(paths[0], encoding='utf-8') as f:
+        raise ValueError(f"Not found file. Check idx {idx}")
+    with open(paths[0], encoding="utf-8") as f:
         docs = [line.strip() for line in f]
-    docs = [line.rsplit('\t', 1) for line in docs]
+    docs = [line.rsplit("\t", 1) for line in docs]
     docs = [row for row in docs if len(row) == 2]
     if max_samples > 0:
         docs = docs[:max_samples]
     texts, scores = zip(*docs)
     scores = [int(s) for s in scores]
     return texts, scores
-