我需要一个数字值的RegEx,最多两个小数位数大于零,并且在一列中可能没有零.我也应该添加….整数都可以.看到下面的一部分,但可能有前导或尾随的空格
Good values: .1 0.1 1.12 123.12 92 092 092.13 Error values: 0 0.0 0.00 00 1.234 -1 -1.2 Anything less than zero
这个怎么样：
^\s*(?=.*[1-9])\d*(?:\.\d{1,2})?\s*$
说明：
^ # Start of string
\s* # Optional whitespace
(?=.*[1-9]) # Assert that at least one digit > 0 is present in the string
\d* # integer part (optional)
(?: # decimal part:
\. # dot
\d{1,2} # plus one or two decimal digits
)? # (optional)
\s* # Optional whitespace
$ # End of string
在Python中测试：
>>> import re
>>> test = [".1","0.1","1.12","123.12","92","092","092.13","0","0.0","0.00","00","1.234","-1","-1.2"]
>>> r = re.compile(r"^\s*(?=.*[1-9])\d*(?:\.\d{1,2})?\s*$")
>>> for item in test:
... print(item,"matches" if r.match(item) else "doesn't match")
...
.1 matches
0.1 matches
1.12 matches
123.12 matches
92 matches
092 matches
092.13 matches
0 doesn't match
0.0 doesn't match
0.00 doesn't match
00 doesn't match
1.234 doesn't match
-1 doesn't match
-1.2 doesn't match
