使用python从句子中仅提取2位数字的方法是什么

Question

我只需要使用python从字符串中提取2位数字即可。 我尝试了以下操作：

1. below will extract all the numbers in the sentence.
 age =[int(s) for s in Text .split() if s.isdigit()]

2. Below code will extract only numbers.
age = re.findall(r'\d+', Text )

Text = I am sorry I am able 28 years old I have cough for 3 weeks online company with severe headache the headache is at its cost in the morning and have some people

Actual output : 28,3
Expected output : 28

Answer 1

使用正则表达式边界\b。

例如：

import re
Text = "I am sorry I am able 28 years old I have cough for 3 weeks online company with severe headache the headache is at its cost in the morning and have some people"

print(re.findall(r"\b\d{2}\b", Text))

输出：

['28']

Answer 2

请尝试执行age = re.findall(r'\d+', Text )，而不要执行步骤2的age = re.findall(r'\d\d', Text )。