Python the next day (dictionary)

Dictionary

Key: Value pair

>>> wuang={' Zhang ': 1992, ' Chen ': 1990, ' Ren ': 1992}

>>> Wuang

{' Chen ': 1990, ' Ren ': 1992, ' Zhang ': 1992}

Add an Element

>>> wuang[' Wang ']=1992

>>> Wuang

{' Chen ': 1990, ' Ren ': 1992, ' Wang ': 1992, ' Zhang ': 1992}

Delete an element

>>> del wuang[' Ren ']

>>> Wuang

{' Chen ': 1990, ' Wang ': 1992, ' Zhang ': 1992}

Display Key Name

>>> Wuang.keys ()

[' Chen ', ' Wang ', ' Zhang ']

Display Value Name

>>> wuang.values ()

[1990, 1992, 1992]

Determine if an element exists in a dictionary

>>> ' Ren ' in Wuang

False

>>> ' Wang ' in Wuang

True

Use the Dict () function to create a dictionary

>>> dict ([' Zhang ', 165), (' Chen ', "(' Ren ', 163)])

{' Chen ':, ' ren ': 163, ' Zhang ': 165}

This article is from the "Don't Ang" blog, please be sure to keep this source http://wuang.blog.51cto.com/9559762/1604660

Python the next day (dictionary)