Python中的輸出格式：用相同的變量替換幾個％s

Question

我正在嘗試維護/更新/重寫/修復一些看起來有點像這樣的Python：

variable = """My name is %s and it has been %s since I was born. 
       My parents decided to call me %s because they thought %s was a nice name. 
       %s is the same as %s.""" % (name, name, name, name, name, name) 

腳本上有一些看起來像這樣的片段，我想知道是否有編寫此代碼的更簡單（更Pythonic？）方式。我發現其中一個實例替換了相同的變量大約30次，而且感覺很難看。

圍繞（在我看來）醜陋的唯一方法將它分成許多小點？

variable = """My name is %s and it has been %s since I was born.""" % (name, name) 
variable += """My parents decided to call me %s because they thought %s was a nice name.""" % (name, name) 
variable += """%s is the same as %s.""" % (name, name) 

Answer 1

使用字典來代替。

var = '%(foo)s %(foo)s %(foo)s' % { 'foo': 'look_at_me_three_times' } 

或format具有明確的編號。

var = '{0} {0} {0}'.format('look_at_meeee') 

那麼，或format與命名參數。

var = '{foo} {foo} {foo}'.format(foo = 'python you so crazy') 

Answer 2

您可以使用命名參數。 See examples here

Answer 3

看看Template Strings

Answer 4

使用新string.format：

name = 'Alex' 
variable = """My name is {0} and it has been {0} since I was born. 
      My parents decided to call me {0} because they thought {0} was a nice name. 
      {0} is the same as {0}.""".format(name) 

Answer 5

>>> "%(name)s %(name)s hello!" % dict(name='foo') 
'foo foo hello!' 

Answer 6

variable = """My name is {0} and it has been {0} since I was born. 
       My parents decided to call me {0} because they thought {0} was a nice name. 
       {0} is the same as {0}.""".format(name) 

Answer 7

使用格式的字符串：

>>> variable = """My name is {name} and it has been {name} since...""" 
>>> n = "alex" 
>>> 
>>> variable.format(name=n) 
'My name is alex and it has been alex since...' 

內的文本的{}可以是一個描述符或一索引值。

另一個奇特的技巧是使用字典來定義多個變量與**運算符的組合。

>>> values = {"name": "alex", "color": "red"} 
>>> """My name is {name} and my favorite color is {color}""".format(**values) 
'My name is alex and my favorite color is red' 
>>>