python: center、ljust、rjust 函数

Syntax

ljust

str. ljust(width[, fillchar])

rjust

str. rjust(width[, fillchar])

center

str. center(width[, fillchar])

Args

• width: 指定字符串长度。
• fillchar: 填充字符（默认字符为空格）。

实验代码

str_ = 'Nanjing'

# fillchar = '+'
assert str_.center(10, '+') == '+Nanjing++'
assert str_.ljust(10, '+') == 'Nanjing+++'
assert str_.rjust(10, '+') == '+++Nanjing'

# fillchar: default is a space
assert str_.center(10) == ' Nanjing  '
assert str_.ljust(10) == 'Nanjing   '
assert str_.rjust(10) == '   Nanjing'

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Ref:

• python-reference

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