文件操作如何进制逐行读取

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文件操作如何进制逐行读取

代码如下：

with open('test.txt') as file1:

for line in file1:

      print(line)

readline() 方法

用于从文件读取整行，包括 " " 字符。如果指定了一个非负数的参数，则返回指定大小的字符数，包括 " " 字符。

with open("writeline.txt","r",encoding="gbk") as file1:

    print(file1.readline(5))

readlines() 方法

用于读取整个文件（所有行）到一个列表，可以由for... in ... 结构进行遍历；列表的每一行变成列表的每一个元素。

with open("china.txt","r",encoding="gbk") as file1:

    lines=file1.readlines()

    for line in lines:

        print(line)

read() 方法

用于从文件中读取指定的字符数，如果未给定或为负则读取所有。

with open("china.txt","r",encoding="gbk") as file1:

    lines=file1.read()

    print(lines)

Python读取文件

with open(‘test.txt') as file1:

content=file1.read()

print(content)

“china/test.txt”

“../../../china/hello/a.txt”

“../a/b/c/dd.txt”

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