Python - String Formatting Method:Hex, octal, and binary

Introduction

Hex, octal, and binary formats are supported by the format method.

Demo

print( '{0:X}, {1:o}, {2:b}'.format(255, 255, 255) )      # Hex, octal, binary 
print( bin(255), int('11111111', 2), 0b11111111 )         # Other to/from binary 
print( hex(255), int('FF', 16), 0xFF )   # Other to/from hex 
print( oct(255), int('377', 8), 0o377 )  # Other to/from octal, in 3.X
#  w ww  .  j ava2 s.  c  om

Result

Formatting parameters can hardcoded in format strings or taken from the arguments list, much like the * syntax in formatting expressions' width and precision:

Demo

print( '{0:.2f}'.format(1 / 3.0) )     # Parameters hardcoded 
print( '%.2f' % (1 / 3.0) )            # Ditto for expression 
#  w  ww  .  j a  va  2s  .  c o m
print( '{0:.{1}f}'.format(1 / 3.0, 4) )# Take value from arguments 
print( '%.*f' % (4, 1 / 3.0) )         # Ditto for expression

Result

Using build-in function:

Demo

print( '{0:.2f}'.format(1.2345) )# String method 
print( format(1.2345, '.2f') )   # Built-in function 
print( '%.2f' % 1.2345 )         # Expression
# from  ww w  .  ja  v  a  2s . co  m

Result

Related Topic

• String format
• String format flags
• String Formatting Expressions
• String Formatting Expression Basics
• String Format integers
• String Format floats
• Dictionary-Based Formatting Expressions
• String Formatting Method Basics
• String Format Method: Adding Keys, Attributes, and Offsets
• String Format Method Advanced Syntax
• String Formatting Method Advanced Examples
• Comparison to the % Formatting Expression
• String format method with a thousand-separator syntax for numbers

• Previous
• Next