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Python数据分析基础
book

Python数据分析基础

by Clinton W. Brownley
August 2017
Intermediate to advanced
274 pages
7h 44m
Chinese
Posts & Telecom Press
Content preview from Python数据分析基础
Python
基础
39
向输出文件中写入内容。
下一节介绍
glob
模块,它让你能够通过几行代码读取和处理多个输入文件。
glob
模块之
所以功能强大,是因为它处理的是文件夹(也就是说,它处理目录,不是单个的文件),
所以将前面读取文件的代码删除或注释掉,这样就可以使
argv[1]
指向一个文件夹,而不
是一个文件了。将代码注释掉就是在你希望计算机忽略掉的代码前面加上一个井号,所以
当你结束注释时,
first_script.py
文件就应该像下面这样:
## 读取一个文本文件(旧方法) ##
#input_file = sys.argv[1]
#print("Output #143:")
#filereader = open(input_file, 'r', newline='')
#for row in filereader:
# print("{}".format(row.strip()))
#filereader.close()
## 读取一个文本文件(新方法) ##
#input_file = sys.argv[1]
#print("Output #144:")
#with open(input_file, 'r', newline='') as filereader:
# for row in filereader:
# print("{}".format(row.strip()))
做完这些修改之后,你就可以添加下一节要讨论的
glob
代码来处理多个文件了。
1.6
 使用
glob
读取多个文本文件 ...
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Publisher Resources

ISBN: 9787115463357