Traceback (most recent call last):
File "redact.py", line 100, in <module>
match = int(re.match(r'\d+', number).group())
AttributeError: 'NoneType' object has no attribute 'group'
输入=(1,2)(5,2)(14,2)(17,2)(1,3)(5,3)(14,3)(17,3)(1,4) (5,4)(8,4)(9,4)(10,4)(11,4)(14,1)(17,1)(20,4)(21,4)(22,4) (23,4)(1,5)(2,5)(3,5)(4,5)(5,5)(8,5)(9,5)(10,5)(11,5) (14,15)(17,5)(20,5)(21,5)(22,5)(23,5)(1,6)(5,6)(8,6)(9,6) (10,6)(11,6)(14,6)(17,6)(20,6)(23,6)(1,7)(5,7)(8,7)(9,7) (14,7)(17,7)(20,7)(21,7)(22,7)(23,7)(1,8)(5,8)(8,8)(9,8) (10,8)(11,8)(14,1)(17,18)(20,8)(21,8)(22,8)(23,8)
上面的output =&gt;&gt;&gt;错误 这是我在执行以下代码后得到的错误消息:
xcoord = []
regex = ur"\b[0-9,]{1,}[,]\s\b" #regex for x coordinates
result = re.findall(regex,str1)
for number in result: #get x numbers from coordinate
match = int(re.match(r'\d+', number).group())
xcoord.append(match) #now got array of numbers for x
maxValueX = max(xcoord) #biggest x value
ycoord = []
regex = ur"\b[,]\s[0-9,]{1,}\b" #regex for y coordinates
result = re.findall(regex,str1)
for number in result: #get y numbers from coordinate
match = int(re.match(r'\d+', number).group())
ycoord.append(match) #now got array of numbers for y
maxValueY = max(ycoord) #biggest y value
print maxValueX
print maxValueY
它搜索的字符串是:“5',',5',',6',',3',”。在两个不同的在线正则表达式生成器上,上面的正则表达式完全适用于字符串。为什么它适用于X坐标但不适用于Y坐标?代码完全一样!
(我试图从字符串中获取整数)。
由于
答案 0 :(得分:0)
变量str1
???
re.match(r'\d+', number)
正在返回None
,因为number
与您的正则表达式不匹配,请查看依赖于result
的变量str1
的内容。
每个正则表达式都必须逐步测试,尝试使用this之类的正则表达式网络工具来测试它们。
将您的正则表达式更改为:regex = "\b([0-9]+)\,\s\b"
答案 1 :(得分:0)
不需要正则表达式:
str1 = "(8, 5)(9, 5)(10, 5)(11, 5)(14, 5)(17, 5)(20, 5)(21, 5)(22, 5)(23, 5)(1, 6)(5, 6)(8, 6)(9, 6)(10, 6)(11, 6)(14, 6)(17, 6)(20, 6)(23, 6)(1, 7)(5, 7)(8, 7)(9, 7)(14, 7)(17, 7)(20, 7)(21, 7)(22, 7)(23, 7)(1, 8)(5, 8)(8, 8)(9, 8)(10, 8)(11, 8)(14, 8)(17, 8)(20, 8)(21, 8)(22, 8)(23, 8)"
xcoord = [int(element.split(",")[0].strip()) for element in str1[1:-1].split(")(")]
ycoord = [int(element.split(",")[1].strip()) for element in str1[1:-1].split(")(")]
maxValueX = max(xcoord); maxValueY = max(ycoord)
print maxValueX;
print maxValueY;
答案 2 :(得分:0)
这将创建两个列表,其中一个包含所有第一个元素,一个列表包含所有第二个元素。
x_cord = map(int,re.findall("(?<=\()\d+",str1))
y_cord= map(int,re.findall("(?<=\,\s)\d+",str1))
x_cord
[8, 9, 10, 11, 14, 17, 20, 21, 22, 23, 1, 5, 8, 9, 10, 11, 14, 17, 20, 23, 1, 5, 8, 9, 14, 17, 20, 21, 22, 23, 1, 5, 8, 9, 10, 11, 14, 17, 20, 21, 22, 23]
y_cord
[5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8]