added pre-commit hooks

.pre-commit-config.yaml

@@ -0,0 +1,17 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.3.0
+    hooks:
+    - id: flake8
+    - id: trailing-whitespace
+    - id: end-of-file-fixer
+    - id: requirements-txt-fixer
+    - id: check-added-large-files
+    - id: check-json
+    - id: pretty-format-json
+      args: [--autofix]
+-   repo: https://github.com/psf/black
+    rev: 19.3b0
+    hooks:
+    -   id: black
+        args: [--config=black.toml]

black.toml

@@ -0,0 +1,21 @@
+[tool.black]
+line-length = 88
+target-version = ['py37']
+include = '\.pyi?$'
+exclude = '''
+
+(
+  /(
+      \.eggs         # exclude a few common directories in the
+    | \.git          # root of the project
+    | \.hg
+    | \.mypy_cache
+    | \.tox
+    | \.venv
+    | _build
+    | buck-out
+    | build
+    | dist
+  )/
+)
+'''

requirements.txt

@@ -1,6 +1,78 @@
 albumentations==0.4.3
-streamlit==0.50.2
+altair==3.2.0
+appdirs==1.4.3
+argh==0.26.2
+aspy.yaml==1.3.0
+astor==0.8.0
+attrs==19.3.0
+base58==1.0.3
+black==19.10b0
+blinker==1.4
+boto3==1.10.26
+botocore==1.13.26
+certifi==2019.9.11
+cfgv==2.0.1
+chardet==3.0.4
+Click==7.0
+cycler==0.10.0
+decorator==4.4.1
+docutils==0.15.2
+entrypoints==0.3
+enum-compat==0.0.3
+flake8==3.7.9
+future==0.18.2
+identify==1.4.7
+idna==2.8
+imageio==2.6.1
+imgaug==0.2.6
+importlib-metadata==0.23
+Jinja2==2.10.3
+jmespath==0.9.4
+json5==0.8.4
+jsonschema==3.0.1
+kiwisolver==1.1.0
+MarkupSafe==1.1.1
+matplotlib==3.1.2
+mccabe==0.6.1
+more-itertools==7.2.0
+networkx==2.4
+nodeenv==1.3.3
 numpy==1.16.4
+opencv-python==4.1.2.30
 opencv-python-headless==4.1.1.26
-json5==0.8.4
-jsonschema==3.0.1
+packaging==19.2
+pandas==0.25.3
+pathspec==0.6.0
+pathtools==0.1.2
+Pillow==6.2.1
+pluggy==0.13.1
+pre-commit==1.20.0
+protobuf==3.10.0
+py==1.8.0
+pycodestyle==2.5.0
+pyflakes==2.1.1
+pyparsing==2.4.5
+pyrsistent==0.15.5
+pytest==5.3.0
+python-dateutil==2.8.0
+pytz==2019.3
+PyWavelets==1.1.1
+PyYAML==5.1.2
+regex==2019.11.1
+requests==2.22.0
+s3transfer==0.2.1
+scikit-image==0.16.2
+scipy==1.3.2
+six==1.13.0
+streamlit==0.50.2
+toml==0.10.0
+toolz==0.10.0
+tornado==5.1.1
+typed-ast==1.4.0
+tzlocal==2.0.0
+urllib3==1.25.7
+validators==0.14.0
+virtualenv==16.7.8
+watchdog==0.9.0
+wcwidth==0.1.7
+zipp==0.6.0