From db02da85f00960c018eb6672a57475bbcf1c5219 Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 30 Sep 2020 09:12:10 +0530
Subject: [PATCH 1/5] Add pre-commit basic config file

---
 .pre-commit-config.yaml | 55 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 .pre-commit-config.yaml

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 000000000000..68b1ddef7e0f
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,55 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.2.0
+    hooks:
+      - id: check-executables-have-shebangs
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+      - id: requirements-txt-fixer
+  - repo: https://github.com/psf/black
+    rev: 20.8b1
+    hooks:
+      - id: black
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.5.3
+    hooks:
+      - id: isort
+        args:
+          - --profile black
+  - repo: https://gitlab.com/pycqa/flake8
+    rev: 3.8.3
+    hooks:
+      - id: flake8
+        args:
+          - --ignore=E203,W503
+          - --max-complexity=25
+          - --max-line-length=88
+#     FIXME: fix mypy errors and then uncomment this
+#    - repo: https://github.com/pre-commit/mirrors-mypy
+#      rev: v0.782
+#      hooks:
+#        - id: mypy
+#          args:
+#            - --ignore-missing-imports
+  - repo: https://github.com/codespell-project/codespell
+    rev: v1.17.1
+    hooks:
+      - id: codespell
+        args:
+          - --ignore-words-list=ans,fo,followings,hist,iff,secant,som,tim
+          - --skip="./.*,./other/dictionary.txt,./other/words,./project_euler/problem_22/p022_names.txt"
+          - --quiet-level=2
+        exclude: |
+          (?x)^(
+              other/dictionary.txt|
+              other/words|
+              project_euler/problem_22/p022_names.txt
+          )$
+  - repo: local
+    hooks:
+      - id: validate-filenames
+        name: Validate filenames
+        entry: ./scripts/validate_filenames.py
+        language: script
+        pass_filenames: false

From a3e1dafbf19b6f3b5a4ff8d00ac7b23b8f1b41a8 Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 30 Sep 2020 10:32:05 +0530
Subject: [PATCH 2/5] Add pre-commit to requirements.txt

---
 requirements.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/requirements.txt b/requirements.txt
index b070ffdf611d..cb38123dc026 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,7 @@ numpy
 opencv-python
 pandas
 pillow
+pre-commit
 pytest
 pytest-cov
 requests

From dd18484e00e53cd12988a5438ab99d9d5b3ed2a9 Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 30 Sep 2020 10:44:47 +0530
Subject: [PATCH 3/5] Small tweaks and use stable for black

---
 .pre-commit-config.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 68b1ddef7e0f..ec6c9907de9d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,7 @@ repos:
       - id: trailing-whitespace
       - id: requirements-txt-fixer
   - repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: stable
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/isort
@@ -42,8 +42,8 @@ repos:
           - --quiet-level=2
         exclude: |
           (?x)^(
-              other/dictionary.txt|
-              other/words|
+              other/dictionary.txt |
+              other/words |
               project_euler/problem_22/p022_names.txt
           )$
   - repo: local

From fdbb8aacb5b2b7b7a5cebec90e38fef2f9ceaa9c Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 30 Sep 2020 11:23:53 +0530
Subject: [PATCH 4/5] Fix isort section in pre-commit-config file

---
 .pre-commit-config.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ec6c9907de9d..4f24c7cc7f27 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -16,7 +16,7 @@ repos:
     hooks:
       - id: isort
         args:
-          - --profile black
+          - --profile=black
   - repo: https://gitlab.com/pycqa/flake8
     rev: 3.8.3
     hooks:

From da8990de5f3fce2cfa716181175aeb59044cf583 Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 30 Sep 2020 12:21:36 +0530
Subject: [PATCH 5/5] Fix errors and EOF only for Python files

---
 .pre-commit-config.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4f24c7cc7f27..2fbb9cb9bdb2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,7 +5,12 @@ repos:
       - id: check-executables-have-shebangs
       - id: check-yaml
       - id: end-of-file-fixer
+        types: [python]
       - id: trailing-whitespace
+        exclude: |
+          (?x)^(
+            data_structures/heap/binomial_heap.py
+          )$
       - id: requirements-txt-fixer
   - repo: https://github.com/psf/black
     rev: stable