Python String Cheat Sheet

Python 3 Quick Reference Card
Python String Library Cheat Sheet
Python String Methods Cheat Sheet Pdf

Python 3 Beginner's Reference Cheat Sheet Alvaro Sebastian Legend: x,y stand for any kind of data values, s for a string, n for a number, L for a list where i,j are list indexes, D stands for a dictionary and k is a dictionary key. Reading and writing files f = open(,'w') f.write f.close. File = open('Hello.txt', 'a') # open in append mode file.write('Hello World again') file.close.

Python 3 Quick Reference Card

Field Width and Alignment

Python String Library Cheat Sheet

`'hey {:10}'.format('hello')`
`'{:010}'.format(2)`	Output: `0000000002`
`'{:*^30}'.format('text')`	Output: `***********text***********`

Member and Element Access

Python String Methods Cheat Sheet Pdf

`'{0}, {1}, {2}'.format(1, 2, 3)`	Output: `1, 2, 3`
`'{}, {}, {}'.format(1, 2, 3)`	Implicit positional arguments (2.7 and above only)
`'{value1}, {value2}, {value2}'.format(value1=1, value2=2, value3=3)`	Access keyword arguments by name
`'{[1]}'.format(['first', 'second', 'third'])`	Access element by index
`'{.name}'.format(sys.stdin)`	Access element attribute
`'{[name]}'.format({'name': 'something'})`	Access element by key

Numerical Representation

`'{:x}'.format(100)`	Output: `64`
`'{:X}'.format(3487)`	Output: `D9F`
`'{:#x}'.format(100)`	Output: `0x64`
`'{:b}'.format(100)`	Output: `1100100`
`'{:c}'.format(100)`	Output: `d`
`'{:d}'.format(100)`	Output: `100`
`'{:,}'.format(1000000)`	Output: `1,000,000`
`'{:o}'.format(100)`	Output: `144`
`'{:n}'.format(100)`	Like `d`, but uses locale information for separators
`'{:e}'.format(0.0000000001)`	Exponent notation
`'{:E}'.format(0.0000000001)`	Exponent notation (capital 'E')
`'{:f}'.format(3/14.0)`	Fixed point
`'{:g}'.format(3/14.0)`	General format
`'{:%}'.format(0.66)`	Percentage
`'{:.3}'.format(0.214286)`	Precision

Conversions

`'{!r}'.format('string')`	Output: `'string'`
`'{!s}'.format(1.53438987)`	Output: `1.53438987`