在Python中读取n行分隔的txt文件

file = open('file.txt', 'r')
lines = file.readlines()
file.close()

with open('file.txt', 'r') as file:
    lines = file.readlines()

with open('file.txt', 'r') as file:
    for line in file:
        # 处理每一行的内容

with open('file.txt', 'r') as file:
    lines = file.readlines()[:n]

with open('file.txt', 'r') as file:
    count = 0
    for line in file:
        count += 1
        if count <= n:
            # 处理每一行的内容
        else:
            break