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Narnik Gamarnik
Asked:2020-01-04 06:52:33 +0000 UTC2020-01-04 06:52:33 +0000 UTC

用 f-string 替换 %-string

  • 772

如何正确写表达式

"%(a)03d%(b)029d" % {"a": 1, "b": 2},

使用f 字符串

python

1 个回答

  1. Best Answer
    In [3]: a,b = 1,2

In [4]: print(f"{a:03d}{b:029d}")
00100000000000000000000000000002

    或者

    In [5]: d = {"a": 1, "b": 2}

In [6]: print(f"{d['a']:03d}{d['b']:029d}")
00100000000000000000000000000002

    使用变量设置格式的示例：

    In [9]: fmt1,fmt2 = "03d", "029d"

In [10]: print(f"{d['a']:{fmt1}}{d['b']:{fmt2}}")
00100000000000000000000000000002
    • 4

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