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Effective_Python/.gitignore

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+**/*.pyc

Effective_Python/Errata.md

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+# Errata
+
+You can see a list of errors that have been found in [_Effective Python: Second Edition_](https://effectivepython.com) by looking at the `Confirmed` label for open issues [following this link](https://github.com/bslatkin/effectivepython/issues?utf8=✓&q=label%3A2ed+label%3Aconfirmed). If you found a mistake and don't see it listed there, [please create a new issue](https://github.com/bslatkin/effectivepython/issues/new). Thanks for your help!

Effective_Python/README.md

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+# Effective Python
+
+Hello! You've reached the official source code repository for _Effective Python: Second Edition_. To learn more about the book or contact the author, please [visit the official website](https://effectivepython.com).
+
+[![Cover](./cover.jpg)](https://effectivepython.com)
+
+In this repository you can browse all of the source code included in the book. Each item has its own file or directory containing the example code. Each file is annotated with which example snippet it came from within each chapter.
+
+To run all the code for an item, just type `./item_01.py` into your shell and see what it prints out. Alternatively you can type `python3 item_01.py` to run a specific version of Python.
+
+To report a problem with the book or view known issues, please [visit the Errata page](./Errata.md).

Effective_Python/VIDEO.md

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+# Example code for [Effective Python LiveLessons](http://www.informit.com/store/effective-python-livelessons-video-training-downloadable-9780134175164)
+
+**This is for a previous edition of the book.**
+
+[Go here to see the corresponding example code](../v1/VIDEO.md)

Effective_Python/cover.jpg

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+#!/usr/bin/env PYTHONHASHSEED=1234 python3
+
+# Copyright 2014-2019 Brett Slatkin, Pearson Education Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Reproduce book environment
+import random
+random.seed(1234)
+
+import logging
+from pprint import pprint
+from sys import stdout as STDOUT
+
+# Write all output to a temporary directory
+import atexit
+import gc
+import io
+import os
+import tempfile
+
+TEST_DIR = tempfile.TemporaryDirectory()
+atexit.register(TEST_DIR.cleanup)
+
+# Make sure Windows processes exit cleanly
+OLD_CWD = os.getcwd()
+atexit.register(lambda: os.chdir(OLD_CWD))
+os.chdir(TEST_DIR.name)
+
+def close_open_files():
+    everything = gc.get_objects()
+    for obj in everything:
+        if isinstance(obj, io.IOBase):
+            obj.close()
+
+atexit.register(close_open_files)
+
+
+# Example 1
+import sys
+print(sys.version_info)
+print(sys.version)

Effective_Python/example_code/item_01.py

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+#!/usr/bin/env PYTHONHASHSEED=1234 python3
+
+# Copyright 2014-2019 Brett Slatkin, Pearson Education Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Reproduce book environment
+import random
+random.seed(1234)
+
+import logging
+from pprint import pprint
+from sys import stdout as STDOUT
+
+# Write all output to a temporary directory
+import atexit
+import gc
+import io
+import os
+import tempfile
+
+TEST_DIR = tempfile.TemporaryDirectory()
+atexit.register(TEST_DIR.cleanup)
+
+# Make sure Windows processes exit cleanly
+OLD_CWD = os.getcwd()
+atexit.register(lambda: os.chdir(OLD_CWD))
+os.chdir(TEST_DIR.name)
+
+def close_open_files():
+    everything = gc.get_objects()
+    for obj in everything:
+        if isinstance(obj, io.IOBase):
+            obj.close()
+
+atexit.register(close_open_files)
+
+
+# Example 1
+a = b'h\x65llo'
+print(list(a))
+print(a)
+
+
+# Example 2
+a = 'a\u0300 propos'
+print(list(a))
+print(a)
+
+
+# Example 3
+def to_str(bytes_or_str):
+    if isinstance(bytes_or_str, bytes):
+        value = bytes_or_str.decode('utf-8')
+    else:
+        value = bytes_or_str
+    return value  # Instance of str
+
+print(repr(to_str(b'foo')))
+print(repr(to_str('bar')))
+
+
+# Example 4
+def to_bytes(bytes_or_str):
+    if isinstance(bytes_or_str, str):
+        value = bytes_or_str.encode('utf-8')
+    else:
+        value = bytes_or_str
+    return value  # Instance of bytes
+
+print(repr(to_bytes(b'foo')))
+print(repr(to_bytes('bar')))
+
+
+# Example 5
+print(b'one' + b'two')
+print('one' + 'two')
+
+
+# Example 6
+try:
+    b'one' + 'two'
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 7
+try:
+    'one' + b'two'
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 8
+assert b'red' > b'blue'
+assert 'red' > 'blue'
+
+
+# Example 9
+try:
+    assert 'red' > b'blue'
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 10
+try:
+    assert b'blue' < 'red'
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 11
+print(b'foo' == 'foo')
+
+
+# Example 12
+print(b'red %s' % b'blue')
+print('red %s' % 'blue')
+
+
+# Example 13
+try:
+    print(b'red %s' % 'blue')
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 14
+print('red %s' % b'blue')
+
+
+# Example 15
+try:
+    with open('data.bin', 'w') as f:
+        f.write(b'\xf1\xf2\xf3\xf4\xf5')
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 16
+with open('data.bin', 'wb') as f:
+    f.write(b'\xf1\xf2\xf3\xf4\xf5')
+
+
+# Example 17
+try:
+    # Silently force UTF-8 here to make sure this test fails on
+    # all platforms. cp1252 considers these bytes valid on Windows.
+    real_open = open
+    def open(*args, **kwargs):
+        kwargs['encoding'] = 'utf-8'
+        return real_open(*args, **kwargs)
+    
+    with open('data.bin', 'r') as f:
+        data = f.read()
+except:
+    logging.exception('Expected')
+else:
+    assert False
+
+
+# Example 18
+# Restore the overloaded open above.
+open = real_open
+
+with open('data.bin', 'rb') as f:
+    data = f.read()
+
+assert data == b'\xf1\xf2\xf3\xf4\xf5'
+
+
+# Example 19
+with open('data.bin', 'r', encoding='cp1252') as f:
+    data = f.read()
+
+assert data == 'ñòóôõ'