Python format cheatsheet (PEP 3101 and PEP 3105)

print.py

# Python PEP 3101 specifies the string formatting function that 
# replaces the old % operator on strings. In addition, PEP 3105 
# also specifies the behavior of the print(), now standard in 
# Python 3. This small cheat-sheet offer an overview of both.

# In Python 2.7 use with:
# from __future__ import print_function

# Print to stderr
>>> from sys import stderr
>>> print('ABC', file=stderr)
ABC

# Print without a newline
>>> print('ABC', end='')
ABC>>>

# Print multiple elements
>>> print('A', 'B', 'C', sep=', ')
A, B, C

# Print in hexadecimal
>>> print('0x{:X}'.format(15))
0xF
>>> print('0x{:08X}'.format(15))
0x0000000F

# Print in octal
>>> print('0o{:o}'.format(15))
0o17
>>> print('0o{:04o}'.format(15))
0o0017

# Print in binary
>>> print('0b{:b}'.format(15))
0b1111
>>> print('0b{:08b}'.format(15))
0b00001111

# Print decimal with leading zeros
>>> print('{:04d}'.format(15))
0015

# Print float with fixed precision
>>> print('{:.2f}'.format(15.0))
15.00

# Print with leading or trailing characters and alignment
>>> print('{:_>12}'.format('My String'))
___My String
>>> print('{:_<12}'.format('My String'))
My String___