import re
# \d+ 匹配字符串中的数字部分，返回列表
ss = 'adafasw12314egrdf5236qew'
num = re.findall('\d+',ss)
print(num)
#运行结果
#['12314', '5236']

> import re
> re.findall(r'\d+', 'hello 42 I'm a 32 string 30')
['42', '32', '30']

> re.findall(r'\d+', "hello 42 I'm a 32 str12312ing 30")
['42', '32', '12312', '30']

> re.findall(r'\b\d+\b', "hello 42 I'm a 32 str12312ing 30")
['42', '32', '30']
> re.findall(r'\b\d+\b', "hello,42 I'm a 32 str12312ing 30")
['42', '32', '30']
> re.findall(r'\b\d+\b', "hello,42 I'm a 32 str 12312ing 30")
['42', '32', '30']