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Resource

Related

String

File

Set & Mapping

Date Time

Array

Indexes and Slices

  • a=[0,1,2,3,4,5]
  • 6
  • len(a)
  • 0
  • a[0]
  • 5
  • a[5]
  • 5
  • a[-1]
  • 4
  • a[-2]
  • [1,2,3,4,5]
  • a[1:]
  • [0,1,2,3,4]
  • a[:5]
  • [0,1,2,3]
  • a[:-2]
  • [1,2]
  • a[1:3]
  • [1,2,3,4]
  • a[1:-1]
  • Shallow copy of a
  • b=a[:]

Math

Angular Conversion

Constants

  • math.pi
  • The mathematical constant π = 3.141592..., to available precision.
  • math.e
  • The mathematical constant e = 2.718281..., to available precision.

Random

Sys

Sys Variables

  • argv
  • Command line args
  • builtin_module_names
  • Linked C modules
  • byteorder
  • Native byte order
  • check_-interval
  • Signal check frequency
  • exec_prefix
  • Root directory
  • executable
  • Name of executable
  • exitfunc
  • Exit function name
  • modules
  • Loaded modules
  • path
  • Search path
  • platform
  • Current platform
  • stdin, stdout, stderr
  • File objects for I/O
  • version_info
  • Python version info
  • winver
  • Version number

sys.argv

  • foo.py
  • sys.argv[0]
  • bar
  • sys.argv[1]
  • -c
  • sys.argv[2]
  • qux
  • sys.argv[3]
  • --h
  • sys.argv[4]

OS

os Variables

  • altsep
  • Alternative sep
  • curdir
  • Current dir string
  • defpath
  • Default search path
  • devnull
  • Path of null device
  • extsep
  • Extension separator
  • linesep
  • Line separator
  • name
  • Name of OS
  • pardir
  • Parent dir string
  • pathsep
  • Patch separator
  • sep
  • Path separator

Class

Special Methods

  • __new__(cls)
  • __lt__(self, other)
  • __init__(self, args)
  • __le__(self, other)
  • __del__(self)
  • __gt__(self, other)
  • __repr__(self)
  • __ge__(self, other)
  • __str__(self)
  • __eq__(self, other)
  • __cmp__(self, other)
  • __ne__(self, other)
  • __index__(self)
  • __nonzero__(self)
  • __hash__(self)
  • __getattr__(self, name)
  • __getattribute__(self, name)
  • __setattr__(self, name, attr)
  • __delattr__(self, name)
  • __call__(self, args, kwargs)

String Formatting

Formatting Operations

  • 'd'
  • Signed integer decimal.
  • 'i'
  • Signed integer decimal.
  • 'o'
  • Signed octal value.
  • 'u'
  • Obsolete type – it is identical to 'd'.
  • 'x'
  • Signed hexadecimal (lowercase).
  • 'X'
  • Signed hexadecimal (uppercase).
  • 'e'
  • Floating point exponential format (lowercase).
  • 'E'
  • Floating point exponential format (uppercase).
  • 'f'
  • Floating point decimal format.
  • 'F'
  • Floating point decimal format.
  • 'g'
  • Floating point format. Uses lowercase exponential format if exponent is less than -4 or not less than precision, decimal format otherwise.
  • 'G'
  • Floating point format. Uses uppercase exponential format if exponent is less than -4 or not less than precision, decimal format otherwise.
  • 'c'
  • Single character (accepts integer or single character string).
  • 'r'
  • String (converts any Python object using repr().
  • 's'
  • String (converts any Python object using str()
  • '%'
  • No argument is converted, results in a '%' character in the result.

Date Formatting

Date Formatting

  • %a
  • Abbreviated weekday (Sun)
  • %A
  • Weekday (Sunday)
  • %b
  • Abbreviated month name (Jan)
  • %B
  • Month name (January)
  • %c
  • Date and time
  • %d
  • Day (leading zeros) (01 to 31)
  • %H
  • 24 hour (leading zeros) (00 to 23)
  • %I
  • 12 hour (leading zeros) (01 to 12)
  • %j
  • Day of year (001 to 366)
  • %m
  • Month (01 to 12)
  • %M
  • Minute (00 to 59)
  • %p
  • AM or PM
  • %S
  • Second (00 to 61?)
  • %U
  • Week number1 (00 to 53)
  • %w
  • Weekday2 (0 to 6)
  • %W
  • Week number3 (00 to 53)
  • %x
  • Date
  • %X
  • Time
  • %y
  • Year without century (00 to 99)
  • %Y
  • Year (2008)
  • %Z
  • Time zone (GMT)
  • %%
  • A literal "%" character (%)

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