Python打印字符串到文本文件 [英] Python Print String To Text File

问题描述

$ b

  text_file = open（Output.txt，w）使用Python打开文本文档）
 
 text_file.write（Purchase Amount：'TotalAmount'）
 
 text_file.close（）
  

我想在文本文件中输入名为TotalAmount的字符串。可以有人请让我知道如何做到这一点？

解决方案

  text_file = open（ Output.txt，w）
 text_file.write（Purchase Amount：％s％TotalAmount）
 text_file.close（）
  

如果你使用一个上下文管理器，文件会自动关闭给你

 <$ c 
 text_file.write（Purchase Amount：％s％TotalAmount）
  pre> 
 
 
如果您使用Python2.6或更高版本，则最好使用 str.format（）  
 
 
 以open（Output.txt，w）作为文本文件：
 text_file.write（Purchase Amount ：{0}。format（TotalAmount））
  
对于python2.7及更高版本， code $ {code $ {$ c $ {$ c $ {$ c $ {$ c $ {$ c $ {$ c $}}}在Python3中，对于 print 函数有一个可选的文件参数
 
 
 打开（Output.tx （Purchase Amount：{}。format（TotalAmount），file = text_file）
  
 Python3.6引入了 f-字符串为另一个替代方案
  with open（Output.txt，w ）as text_file：
 print（fPurchase Amount：{TotalAmount}，file = text_file）
  
 
I'm using Python to open a text document:
text_file = open("Output.txt", "w")

text_file.write("Purchase Amount: " 'TotalAmount')

text_file.close()
I want to enter the string called "TotalAmount" into the text document. Can someone please let me know how to do this?
解决方案
text_file = open("Output.txt", "w")
text_file.write("Purchase Amount: %s" % TotalAmount)
text_file.close()
If you use a context manager, the file is closed automatically for you
with open("Output.txt", "w") as text_file:
    text_file.write("Purchase Amount: %s" % TotalAmount)
If you're using Python2.6 or higher, it's preferred to use str.format()
with open("Output.txt", "w") as text_file:
    text_file.write("Purchase Amount: {0}".format(TotalAmount))
For python2.7 and higher you can use {} instead of {0}

In Python3, there is an optional file parameter to the print function
with open("Output.txt", "w") as text_file:
    print("Purchase Amount: {}".format(TotalAmount), file=text_file)
Python3.6 introduced f-strings for another alternative
with open("Output.txt", "w") as text_file:
    print(f"Purchase Amount: {TotalAmount}", file=text_file)


                        
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