Python glob没有给出结果

您的代码中存在多个问题。首先,您要计算 文件名 而不是文件对象。第二个问题是初始化 i=0

就我个人而言,我只是将文件转换为一个“行”列表,剪掉第一行和最后一行,并将它们全部写入新文件:

import glob

list_of_files = glob.glob('path/to/directory/*.csv')
for file_name in list_of_files:
    with open(file_name, 'r') as fi:
        with open(file_name.replace('csv', 'out'), 'w') as fo:
            for line in list(fi)[1:-1]:  # for all lines except the first and last
                fo.write(line)

with open 允许省略 close 调用(因为它们是隐式完成的),即使发生异常。

如果仍然没有输出,您可以 print 显示正在处理的文件的语句:

print(file_name)  # just inside the for-loop before any `open` calls.

因为您使用的是python-3.5,所以也可以使用 pathlib :

import pathlib

path = pathlib.Path('path/to/directory/')

# make sure it's a valid directory
assert path.is_dir(), "{} is not a valid directory".format(p.absolute())

for file_name in path.glob('*.csv'):
    with file_name.open('r') as fi:
        with pathlib.Path(str(file_name).replace('.csv', '.out')).open('w') as fo:
            for line in list(fi)[1:-1]:  # for all lines except the first and last
                fo.write(line)

[1:-1]

import pathlib

def ignore_first_and_last(it):
    it = iter(it)
    firstline = next(it)
    lastline = next(it)
    for nxtline in it:
        yield lastline
        lastline = nxtline

path = pathlib.Path('path/to/directory/')

# make sure it's a valid directory
assert path.is_dir(), "{} is not a valid directory".format(p.absolute())

for file_name in path.glob('*.csv'):
    with file_name.open('r') as fi:
        with pathlib.Path(str(file_name).replace('.csv', '.out')).open('w') as fo:
            for line in ignore_first_and_last(fi):  # for all lines except the first and last
                fo.write(line)