如何在Python中进行文件操作

file = open("data.txt", "r")  # 以只读模式打开名为data.txt的文件
# 进行文件操作

file.close()  # 关闭文件

# 一次性读取整个文件内容
file = open("data.txt", "r")
content = file.read()
file.close()

# 逐行读取文件内容
file = open("data.txt", "r")
for line in file.readlines():
    print(line)
file.close()

# 一次性写入内容
file = open("output.txt", "w")
file.write("Hello, World!")
file.close()

# 逐行写入内容
lines = ["Line 1", "Line 2", "Line 3"]
file = open("output.txt", "w")
file.writelines(lines)
file.close()

# 复制文件
file1 = open("source.txt", "r")
file2 = open("destination.txt", "w")
content = file1.read()
file2.write(content)
file1.close()
file2.close()

import os

os.remove("data.txt")  # 删除名为data.txt的文件

file = open("data.txt", "r")
file.seek(5)  # 将文件指针移动到第6个字节的位置（从0开始计数）

content = file.read()  # 从当前位置开始读取文件内容
print(content)

file.close()