如何在字符串中查找数字

时间:2016-06-14 15:37:59

标签: python

text1 = 'three digits NUMBER_001'

以下代码在字符" NUMBER _":['NUMBER_123']之后的字符串中正确找到三位数:

result = re.findall('NUMBER_\d\d\d', text1)
print result

但如果数字超过三位数,则返回不完整的数字:

text2 = 'four digits number is NUMBER_0001'
result = re.findall('NUMBER_\d\d\d', text2)

有没有办法找到字符后面的所有连续数字" NUMBER _"?

2 个答案:

答案 0 :(得分:1)

只需在您的注册表中使用()

result = re.findall('NUMBER_(\d\d\d)', text1)

同样应写为,

result = re.findall('NUMBER_(\d{3})', text1)

或者,任意数量的数字:

result = re.findall('NUMBER_([\d]+)', text1)

OR

result = re.findall('NUMBER_([0-9]+)', text1)

答案 1 :(得分:0)

只需将你的正则表达式替换为:

result = re.findall('NUMBER_([0-9]+)', text1)