需要帮助使用带括号的字符串

Question

我是 python 的新手。我拼凑了一个非常有效的代码，除非我在 find_str 变量的字符串中有方括号。我尝试使用双括号，但它也不起作用。

目标是将 CSV 列表中包含 _(FAIL)_ 的所有文本替换为 SUCCESS。

这是我的代码：

import glob
import re


filenames = sorted(glob.glob('*.csv'))
filenames = filenames
for f2 in filenames:

    csv_name=f2

    # open your csv and read as a text string
    with open(csv_name, 'r') as f:
        my_csv_text = f.read()

    find_str = "_(FAIL)_"
    replace_str = "SUCCESS"


    # substitute
    new_csv_str = re.sub(find_str, replace_str, my_csv_text)


    # open new file and save
    new_csv_path = csv_name 
    with open(new_csv_path, 'w') as f:
        f.write(new_csv_str)

Answer 1

看起来你需要转义括号

尝试：

find_str = "_\(FAIL\)_"
replace_str = "SUCCESS"

# substitute
new_csv_str = re.sub(find_str, replace_str, my_csv_text)

Answer 2

无需使用正则表达式，re.sub() 即可，str.replace() 即可：

find_str = "_(FAIL)_"
replace_str = "SUCCESS"

my_csv_text = 'We go through life and _(FAIL)_ and _(FAIL)_ and _(FAIL)_'

new_csv_str = my_csv_text.replace(find_str, replace_str)

print(new_csv_str)

给出：

We go through life and SUCCESS and SUCCESS and SUCCESS

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