Question

如何跳转到逐行循环的文件的下一行。下面的代码是跳过第二个循环中总计数的行，我希望它逐行跳过第一行所需的计数，这样我就可以从文件中提取正确的信息。

f = open("someTXT", "r")

lines = iter(f.readlines())

for line in lines:
    thisLine = line.split(',')
    if len(thisLine) > 3:
        count = thisLine[4]
        for i in range(1,int(count)):
            next(lines)
            print(line)

Answer 1

这里有一些代码审查。不知道你在问什么。

使用上下文管理器打开文件：

with open("someTXT", 'rU') as f: # Universal newline flag, best practice

    # lines = iter(f) # no need for this, my_file is an iterator
    container = [] #   use a container to hold your lines
    for line in f:
        test = test_for_correct_lines(line) # return True if keep and print
        if test:
            container.append(line)

# join the lines you want to keep with a newline and print them
print('\n'.join(container))

Python - 打开文件并循环每一行时跳到下一行

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