Python's Common formatted output summary _python

This article summarizes some simple basic output format form, the following words do not say more, to see the detailed introduction bar.

A, print string

>>> print "I ' m%s"% ("Jihite")
I ' m jihite

Second, print integer

>>> print "I ' m%d years old" (%)
i ' M years old

Third, printing floating point numbers

>>> print "π=%f"% (3.1415926)
π=3.141593

Printing floating-point numbers (specify how many decimal places to keep)

>>> print "π=%.3f"% (3.1415926)
π=3.142

V. Specify the placeholder width

>>> print "name:%8s age:%8d weight:%8.2f"% ("Jihite", 62.2) Name:jihite age
:   WEIGHT:  62. 20

Six, specify the placeholder width (left-aligned)

>>> print "name:%-8s age:%-8d weight:%-8.2f"% ("Jihite", 62.2) name:jihite age:17      

Vii. specify placeholders (only 0 placeholders)

>>> print "name:%-8s age:%08d weight:%08.2f"% ("Jihite", 62.2) name:jihite age:00000017  0062.20

Viii. Scientific Counting method

>>> format (0.0000023, '. 2e ')
' 2.30e-06 '
>>> format (0.23, '. 2e ')
' 2.30e-01 '

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