Add warning about dropping python2 support (#307)

Fix #303
pdfminer · Oct 20, 2019 · adc4726 · adc4726
1 parent dd7dc7b
commit adc4726
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Deprecated
+- Support for Python 2 is dropped at January 1st, 2020 ([#307](https://github.com/pdfminer/pdfminer.six/pull/307))
+
 ### Added
 - Contribution guidelines in [CONTRIBUTING.md](CONTRIBUTING.md) ([#259](https://github.com/pdfminer/pdfminer.six/pull/259))
 - Support new encodings OneByteEncoding and DLIdent for CMaps ([#283](https://github.com/pdfminer/pdfminer.six/pull/283))

diff --git a/pdfminer/__init__.py b/pdfminer/__init__.py
@@ -10,7 +10,15 @@
 formats (such as HTML). It has an extensible PDF parser that can be used for
 other purposes instead of text analysis.
 """
+import sys
+import warnings
+
 __version__ = '20181108'
 
+
+if sys.version_info < (3, 0):
+    warnings.warn('On January 1st, 2020, pdfminer.six will stop supporting Python 2. Please upgrade to Python 3. For '
+                  'more information see https://github.com/pdfminer/pdfminer.six/issues/194')
+
 if __name__ == '__main__':
     print(__version__)