在python中按可变长度格式化

2022-01-15 00:00:00 python string format variables printing

问题描述

我想使用 .format() 方法打印类似楼梯的图案.我试过了，

I want to print a staircase like pattern using .format() method. I tried this,

for i in range(6, 0, -1):
    print("{0:>"+str(i)+"}".format("#"))

但它给了我以下错误:

ValueError: Single '}' encountered in format string

基本上这个想法是打印

     #
    #
   #
  #
 #
#

代码看起来类似于，

for i in range(6, 0, -1):
    print("{0:>i}".format("#"))

解决方案

目前你的代码解释如下:

Currently your code interpreted as below:

for i in range(6, 0, -1):
    print ( ("{0:>"+str(i))     +     ("}".format("#")))

所以格式字符串由单个}"构成，这是不正确的.您需要以下内容:

So the format string is constructed of a single "}" and that's not correct. You need the following:

for i in range(6, 0, -1):
    print(("{0:>"+str(i)+"}").format("#"))

随心所欲地工作:

================ RESTART: C:/Users/Desktop/TES.py ================
     #
    #
   #
  #
 #
#
>>>

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