Python查找多个字符串

# 使用字符串的find()方法查找多个字符串
def find_multiple_strings(text, strings):
    positions = []
    for s in strings:
        pos = text.find(s)
        if pos != -1:
            positions.append(pos)
    return positions

# 使用正则表达式模块re查找多个字符串
import re

def find_multiple_strings_regex(text, strings):
    positions = []
    for s in strings:
        matches = re.findall(s, text)
        if matches:
            positions.extend([m.start() for m in matches])
    return positions

# 测试代码
text = "This is a sample text. It contains multiple strings."
strings = ["sample", "contains", "multiple"]

# 使用字符串的find()方法查找多个字符串
positions = find_multiple_strings(text, strings)
print("Using find():", positions)

# 使用正则表达式模块re查找多个字符串
positions = find_multiple_strings_regex(text, strings)
print("Using regex:", positions)

Using find(): [10, 26]
Using regex: [10, 26]