如何使用Python中使用包含在字典中的正則表達式使用Python

Question

目前，我在使用declare -A的bash中存在限制，以便使用關聯數組並將字符串視爲索引，這是因爲我無法安裝v4.0環境。作爲一種解決方法，我試圖用Python構建我的腳本。這是我想在Python翻譯代碼：

declare -A regex 
regex[test_one]="line1\|here1" 
regex[test_two]="line2\|here2" 
regex[test_three]="line3\|here3" 
regex[test_four]="line4\|here4" 

echo -n "Enter the path to evaluate...> " 
read path 
for i in "${!regex[@]}" 
do 
     grep -h -r --color=always "${regex["$i"]}" "$path" >> "$i.txt" 
done 

任何幫助，將大大appreciated.Thanks

編輯注：

這是一段代碼，我目前，謝謝到@Harvey

import sys 
import subprocess 

regex = { 
'test_one': r'line1\|here1', 
'test_two': r'line2\|here2', 

} 

sys.stdin.flush() 
path = raw_input("Enter the path to evaluate...> ") 

search = "/bin/sh -c \'grep -h -r'.split()" 
    for name, pattern in regex.items(): 
     with open('{}.txt'.format(name), 'a') as output: 
      cmd = search + [pattern,path] 
     subprocess.call(cmd, stdout=output) 

不過，我已經在Line 18以下錯誤：

Traceback (most recent call last): 
File "./Script.py", line 18, in <module> 
cmd = search + [pattern,path] 
TypeError: cannot concatenate 'str' and 'list' objects 

Answer 1

我認爲這是僅使用標準庫的最佳方法。

這是用於Python 3.對於Python 2，變化：

• subprocess.run() ==>subprocess.call()
• input() ==>raw_input()

。

#!/usr/bin/env python3 

import sys 
import subprocess 

regex = { 
    'test_one': r'line1\|here1', 
    'test_two': r'line2\|here2', 
    'test_three': r'line3\|here2', 
    'test_four': r'line4\|here2', 
} 

if len(sys.argv) >= 2: 
    path = sys.argv[1] 
else: 
    path = input("Enter the path to evaluate...> ") 

base_cmd = 'grep -h -r --color=always'.split() 
for name, pattern in regex.items(): 
    with open('{}.txt'.format(name), 'a') as output: 
     cmd = base_cmd + [pattern, path] 
     subprocess.run(cmd, stdout=output)