在字符串中查找变量的字符串操作

name = "John"
age = 25
result = "My name is " + name + " and I am " + str(age) + " years old."
# 或者使用字符串模板
result = f"My name is {name} and I am {age} years old."

name = "John"
age = 25
result = "My name is %s and I am %d years old." % (name, age)
# 或者使用format()方法
result = "My name is {} and I am {} years old.".format(name, age)

import re

text = "My name is John and I am 25 years old."
pattern = r"My name is (\w+) and I am (\d+) years old."
match = re.search(pattern, text)
if match:
    name = match.group(1)
    age = match.group(2)
    result = f"My name is {name} and I am {age} years old."

import json

data = '{"name": "John", "age": 25}'
parsed_data = json.loads(data)
name = parsed_data["name"]
age = parsed_data["age"]
result = f"My name is {name} and I am {age} years old."