Question

我有以下文件，我想替换＃sys.path.insert（0，os.path.abspath（＆＃39;。＆＃39;）） 使用 sys.path.extend（[＆＃39; path1＆＃39;，＆＃39; path2＆＃39;]）

import sys
import os

# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#sys.path.insert(0, os.path.abspath('.'))

# -- General configuration ------------------------------------------------

但是，以下代码不会更改该行。

with open(os.path.join(conf_py_path, "conf.py"), 'r+') as cnfpy:
    for line in cnfpy:
        line.replace("#sys.path.insert(0, os.path.abspath('.')))",
                    "sys.path.extend(%s)\n" %src_paths)
        cnfpy.write(line)

如何更换生产线？

Answer 1

尝试fileinput在文件中就地更改字符串：

import fileinput
for line in fileinput.input(filename, inplace=True):
    print(line.replace(string_to_replace, new_string))

用Python替换文档中的行

1 个答案: