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Python Quick Reference Card overapi [.pdf]
Python 2.6 Quick Reference
Related
String
String Methods
- capitalize()
- center(width[, fillchar])
- count(sub[, start[, end]])
- decode
- encode([encoding[, errors]])
- endswith(suffix[, start[, end]])
- expandtabs([tabsize])
- find(sub[, start[, end]])
- format(*args, **kwargs)
- index(sub[, start[, end]])
- isalnum()
- isalpha()
- isdigit()
- islower()
- isspace()
- istitle()
- isupper()
- join(iterable)
- ljust(width[, fillchar])
- lower()
- lstrip([chars])
- partition(sep)
- replace(old, new[, count])
- rfind(sub[, start[, end]])
- rindex(sub[, start[, end]])
- rjust(width[, fillchar])
- rpartition(sep)
- rsplit([sep[, maxsplit]])
- rstrip([chars])
- split([sep[, maxsplit]])
- splitlines([keepends])
- startswith(prefix[, start[, end]])
- strip([chars])
- swapcase
- title()
- translate(table[, deletechars])
- upper()
- zfill(width)
- isnumeric()
- isdecimal()
Date Time
Date Object
Date Time Object
Time Object
Array
Array Methods
Indexes and Slices
a=[0,1,2,3,4,5]
len(a) >>> 6
a[0] >>>> 0
a[5] >>>> 5
a[-1] >>> 5
a[-2] >>>> 4
a[1:] >>>> [1,2,3,4,5]
a[:5] >>>> [0,1,2,3,4]
a[:-2] >>> [0,1,2,3]
a[1:3] >>> [1,2]
a[1:-1] >>>> [1,2,3,4]
b=a[:] >>>>> Shallow copy of a
Operating System
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
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.
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)
Date Formate
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 (%)
Set & Mapping
Set Types
Mapping Types
- len(d)
- d[key]
- d[key] = value
- del d[key]
- key in d
- key not in d
- iter(d)
- clear()
- copy()
- fromkeys(seq[, value])
- get(key[, default])
- has_key(key)
- items()
- iteritems()
- iterkeys()
- itervalues()
- keys()
- pop(key[, default])
- popitem()
- setdefault(key[, default])
- update([other])
- values
Random
Functions
- seed([x])
- getstate()
- setstate(state)
- jumpahead(n)
- getrandbits(k)
- randrange([start], stop[, step])
- randint(a,b)
- choice(seq)
- shuffle(x[,random])
- sample(population,k)
- random()
- uniform(a,b)
- triangular(low,high,mode)
- betavariate(alpha,beta)
- expovariate(lambd)
- gammavariate(alpha,beta)
- gauss(mu,sigma)
- lognormvariate(mu,sigma)
- normalvariate(mu,sigma)
- vonmisesvariate(mu,kappa)
- paretovariate(alpha)
- weibullvariate(alpha,beta)
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
sys.argv[0] >>> foo.py
bar >>> sys.argv[1]
-c >>> sys.argv[2]
qux >>> sys.argv[3]
--h >>> sys.argv[4]
Math
Number Theoretic
Power and Logarithmic
Angular Conversion
Hyperbolic Functions
Constants
math.pi
The mathematical constant π = 3.141592..., to available precision.
math.e
The mathematical constant e = 2.718281..., to available precision.