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可以使用正则表达式或者内置的字符串方法来提取字符串中的数字。
使用正则表达式:
import re s = "abc123def456" numbers = re.findall(r'\d+', s) print(numbers) # ['123', '456']
使用字符串方法:
s = "abc123def456" numbers = ''.join(filter(str.isdigit, s)) print(numbers) # '123456'
如需提取浮点数,可以稍作修改:
import re s = "abc1.23def4.56" numbers = re.findall(r'\d+\.\d+', s) print(numbers) # ['1.23', '4.56'] s = "abc1.23def4.56" numbers = ''.join(filter(lambda x: x.isdigit() or x == '.', s)) print(numbers) # '1.234.56'