Python-將字典內容替換到字符串

 

 

今天說一下如何替換字符串里面的值

 

 

首先我們用到的是re模塊,先找到我們想要替換的值

 

示例:

 

• 處理單個值

import re

dict_re = {"name": "王二狗"}
str_01 = "{'桃桃人':'${name}55962'}"

# 按照我寫定的模板進行數據查找
variable = re.findall('\\${.+?}', str_01)
print(variable)
# 替換字符串內的值
# [2:-1] 是去除 ${ 這兩個符號 -1 去除的是結尾的 }
str_01 = str_01.replace(variable[0], dict_re[variable[0][2:-1]])
print(str_01)

 

 

 

• 處理多個正則提取

 

示例:

 

dict_res = {"name": "王二狗", "sex": "男"}
str_02 = "{'桃桃人':'${name}55962','性別': ${sex}}"
variables_list = re.findall('\\${.+?}', str_02)
print(variables_list)
for variable in variables_list:
    str_02 = str_02.replace(variable, dict_res[variable[2:-1]])
print(str_02)

 

 

 

 

 

整體代碼

 

# -*- coding: utf-8 -*-
# @Time : 2021/12/7 15:22
# @Author : Limusen
# @File : re_demo_onlie

import re

dict_re = {"name": "王二狗"}
str_01 = "{'桃桃人':'${name}55962'}"

# 按照我寫定的模板進行數據查找
variable = re.findall('\\${.+?}', str_01)
print(variable)
# 替換字符串內的值
# [2:-1] 是去除 ${ 這兩個符號 -1 去除的是結尾的 }
str_01 = str_01.replace(variable[0], dict_re[variable[0][2:-1]])
print(str_01)

print("=================  demo02 多個值替換 =====================")

dict_res = {"name": "王二狗", "sex": "男"}
str_02 = "{'桃桃人':'${name}55962','性別': ${sex}}"
variables_list = re.findall('\\${.+?}', str_02)
print(variables_list)
for variable in variables_list:
    str_02 = str_02.replace(variable, dict_res[variable[2:-1]])
print(str_02)