如何在Python中处理正则表达式的问题

import re

import re

text = "Hello, I am a Python developer."

# 从字符串开头匹配是否为Hello
result = re.match("Hello", text)
print(result.group())

# 搜索整个字符串，找到第一个匹配的Python
result = re.search(r"Python", text)
print(result.group())

# 查找字符串中所有匹配的单词
Words = re.findall(r"w+", text)
print(words)

# 使用迭代器查找所有的匹配子串
iterator = re.finditer(r"w+", text)
for match in iterator:
    print(match.group())

import re

text = "Hello, I am a Python developer."

# 将Python替换为Java
result = re.sub("Python", "Java", text)
print(result)

import re

text = "Hello, I am a Python developer."

# 根据逗号和空格进行切割
result = re.split(r",s", text)
print(result)

import re

text = "Hello, I am a Python developer."

# 提取姓名和职业
result = re.match(r"Hello, I am (.+) developer.", text)
name = result.group(1)
print(name)