Python 50

• Tim, Python

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File "test.py", line 6 print "yoshi" ^IndentationError: unexpected indent

• Python Tab

• Tab

Parsing

pop pop

• Tab

• Editor Tab

default argument

• Python def argument

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closure

• closure Python

• reference Python lexical scope)

• closure gc

• 1. class  __call__   lexical scope

• 2. functool.partial

Global Variable

• Python Local Global

global

local

• Global

• global

Dead or Alive

• del symbol table reference count -1

• reference count 0 GC, __del__

Circular reference

• 2016 Python

• __del__. Python

• circular reference. weak reference.

• weak reference reference count.

• Python gc

Interface

• interface

• base class Python

List Related

• iterate list

• list

Package

• sudo pip

• virtualenv

• requirements.txt dependency

• setup.py

• pip freeze > requirements.txt

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• Conflict merge

2 == > 3• python 3

• __future__, six

• print_function

• absolute_import

• io.open 2.7 encoding

Quality

• flake8 —install-hook

• commit pep8

• # noqa

inheritance

• super

Any Question?