Python nonetype object has no attribute groups

‘NoneType’ object has no attribute ‘group’

Can somebody help me with this code? I’m trying to make a python script that will play videos and I found this file that download’s Youtube videos. I am not entirely sure what is going on and I can’t figure out this error. Error:

AttributeError: 'NoneType' object has no attribute 'group' 

Traceback (most recent call last): File "youtube.py", line 67, in videoUrl = getVideoUrl(content) File "youtube.py", line 11, in getVideoUrl grps = fmtre.group(0).split('&') 

content = resp.read() videoUrl = getVideoUrl(content) if videoUrl is not None: print('Video URL cannot be found') exit(1) 

def getVideoUrl(content): fmtre = re.search('(? <=fmt_url_map=).*', content) grps = fmtre.group(0).split('&') vurls = urllib2.unquote(grps[0]) videoUrl = None for vurl in vurls.split('|'): if vurl.find('itag=5') >0: return vurl return None 

4 Answers 4

The error is in your line 11, your re.search is returning no results, ie None , and then you’re trying to call fmtre.group but fmtre is None , hence the AttributeError .

def getVideoUrl(content): fmtre = re.search('(? <=fmt_url_map=).*', content) if fmtre is None: return None grps = fmtre.group(0).split('&') vurls = urllib2.unquote(grps[0]) videoUrl = None for vurl in vurls.split('|'): if vurl.find('itag=5') >0: return vurl return None 

You use regex to match the url, but it can’t match, so the result is None

and None type doesn’t have the group attribute

You should add some code to detect the result

If it can’t match the rule, it should not go on under code

def getVideoUrl(content): fmtre = re.search('(? <=fmt_url_map=).*', content) if fmtre is None: return None # if fmtre is None, it prove there is no match url, and return None to tell the calling function grps = fmtre.group(0).split('&') vurls = urllib2.unquote(grps[0]) videoUrl = None for vurl in vurls.split('|'): if vurl.find('itag=5') >0: return vurl return None 

Just wanted to mention the newly walrus operator in this context because this question is marked as a duplicate quite often and the operator may solve this very easily.
Before Python 3.8 we needed:

match = re.search(pattern, string, flags) if match: # do sth. useful here 

As of Python 3.8 we can write the same as:

if (match := re.search(pattern, string, flags)) is not None: # do sth. with match 

Other languages had this before (think of C or PHP ) but imo it makes for a cleaner code. For the above code this could be

def getVideoUrl(content): if (fmtre := re.search('(?<=fmt_url_map=).*', content)) is None: return None . 

just wanted to add to the answers, a group of data is expected to be in a sequence, so you can match each section of the grouped data without skipping over a data because if a word is skipped from a sentence, we may not refer to the sentence as one group anymore, see the below example for more clarification, however, the compile method is deprecated.

msg = "Malcolm reads lots of books" #The below code will return an error. book = re.compile('lots books') book = re.search(book, msg) print (book.group(0)) #The below codes works as expected book = re.compile ('of books') book = re.search(book, msg) print (book.group(0)) #Understanding this concept will help in your further #researchers. Cheers. 

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'NoneType' object has no attribute 'groups'

But the result's value is None and I am not able figure out why. Kindly let me know if I am missing something very basic.

The last two lines of your code. is that valid syntax? This may lead to why you're not finding any matches in your search.

1 Answer 1

>>> import re >>> sentence = "foo bar (foo) bar foo-bar foo_bar foo'bar bar-foo bar, foo" >>> word = 'foo' >>> compileObj = re.compile(r'\b%s\b' % re.escape(word)) >>> result = compileObj.search(sentence) >>> print result.group() foo >>> print compileObj.findall(sentence) ['foo', 'foo', 'foo', 'foo', 'foo', 'foo'] 

Possible misconceptions and the corresponding explanations:

• You need a raw string r'\bfoo\b' to make python not interpret the special characters (in this example the backslash `) and pass them unchanged to the regular expression library.
• You probably want to re.escape the word in case it contains more regular expression special characters.
• .search() only finds the first match. To find all matches use .findall() or .finditer()

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[Solved] AttributeError: Nonetype Object Has No Attribute Group

As we all know, programming plays a key role in today’s advancement. However, for it to be fully fleshed, it should have to be error-free. Programmers or developers always try to build those models which should be more reliable to the users and provide more convenience. Errors play an essential role in achieving that. However, there are also different metrics used alongside to accomplish that. But for today, we will stick to one such error, i.e., AttributeError: Nonetype object has no Attribute Group.

When we try to call or access any attribute on a value that is not associated with its class or data type, we get an attribute error. Let’s try to understand it more clearly. So when we define any variable or instance for any class or data type, we have access to its attributes. We can use it for our operations but when we try to call an attribute that is not defined for that particular class we get the attribute error.

What is AttributeError: Nonetype object has no Attribute Group

“AttributeError Nonetype object has no attribute group” is the error raised by the python interpreter when it fails to fetch or access “group attribute” from any class. The reason for that may be that it is not defined within the class or maybe privately expressed, so the external objects cannot access it. It is good to see it as the interpreter is trying to access those attributes from any class that is not present in that class or is unauthorized to access it.

Why do I get “AttributeError: Nonetype object has no Attribute Group” Error?

There may be more than one scenario where one can get the given error. Some of them are like while using regex or while using google translator. But the reason to get the given error lies in the fact that we want to access some unavailable attributes of some classes in any of the modules. Let’s take an example of regex that why we got the error.

Example 1: In Regex

searchbox = driver.find_element_by_class_name("searchbox") searchbox_result = re.match(r"^.*(?=(\())", searchbox).group()

Output: AttributeError: 'NoneType' object has no attribute 'group'

In the above case, the error rises because the match function didn’t match any of the objects, resulting in the function returning nothing. This makes it a NoneType of the object. Now, when we try to group the objects from an empty object, it throws the mentioned error. In simple words, you can say that to group several objects. It would be best to have some empty objects in the above case.

Solution 1

The solution to the above error is to bind it up within the try-except block. This results that when the match function returns the list of objects, we can group them and possibly do that without an error. But when the match function returns nothing, we need not worry about grouping them. Let’s see the try-except block to understand it clearly.

try: searchbox_result = re.match("^.*(?=(\())", searchbox).group() except AttributeError: searchbox_result = re.match("^.*(?=(\())", searchbox)

Solution 2: Avoiding error using if statement

However, besides the above solution, we can also avoid the error using the if statement. We can add an if statement and compare it to “None”. If the condition follows, we can return it or pass it. Let’s see the solution for the above error.

searchbox = driver.find_element_by_class_name("searchbox") searchbox_result = re.match(r"^.*(?=(\())", searchbox).group() if searchbox_result is None: return None # or pass else: do. something

FAQs on Attributeerror Nonetype Object Has No attribute Group

We can either use try and except block for the error or use the if statement as suggested in the article.

In this case, also we can use the if statement for the variable as mentioned in the article.

Conclusion

So, today in this article, we understood the meaning of AttributeError: Solution to ” AttributeError: Nonetype object has no Attribute Group” Error. We have seen what the error is and how we can solve the error.

I hope this article has helped you. Thank You.

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Python regex AttributeError: 'NoneType' object has no attribute 'group'

The code works as long as the search box returns results that match the Regex. But if the search box replies with the string "No results" I get error:

3 Answers 3

I managed to figure out this solution: omit group() for the situation where the searchbox reply is "No results" and thus doesn't match the Regex.

try: searchbox_result = re.match("^.*(?=(\())", searchbox).group() except AttributeError: searchbox_result = re.match("^.*(?=(\())", searchbox) 

Is there any solution if I have multiple number of regexes and dont want to except them individually?

re.match("^.*(?=(\())", search_result.text) 

then if no match was found, None will be returned:

Return None if the string does not match the pattern; note that this is different from a zero-length match.

You should check that you got a result before you apply group on it:

res = re.match("^.*(?=(\())", search_result.text) if res: # . 

Thanks, can you give a more specific example of code? I basically want it to write "" to res if it finds nothing. Or alternatively, pass if using except .

@Winterflags Also note that your regex is greedy, it matches "abc(def" in the following string abc(def( . Is that what you want?

I updated the question with if condition and traceback . It seems to refer back to the line with re.match even though I do if after regex.

The regex works as intended right now, perhaps overly greedy but it doesn't produce capture errors. If it's necessary to change it to account for None we can do that.

This error occurs due to your regular expression doesn't match your targeted value. Make sure whether you use the right form of a regular expression or use a try-catch block to prevent that error.

try: pattern = r"^.*(?=(\())" searchbox_result = re.match(pattern, searchbox).group() except AttributeError: print("can't make a group") 

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googletrans stopped working with error 'NoneType' object has no attribute 'group'

I was trying googletrans and it was working quite well. Since this morning I started getting below error. I went through multiple posts from stackoverflow and other sites and found probably my ip is banned to use the service for sometime. I tried using multiple service provider internet that has different ip and stil facing the same issue ? I also tried to use googletrans on different laptops , still same issue ..Is googletrans package broken or something google did at their end ?

>>> from googletrans import Translator >>> translator = Translator() >>> translator.translate('안녕하세요.') Traceback (most recent call last): File "", line 1, in translator.translate('안녕하세요.') File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/googletrans/client.py", line 172, in translate data = self._translate(text, dest, src) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/googletrans/client.py", line 75, in _translate token = self.token_acquirer.do(text) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/googletrans/gtoken.py", line 180, in do self._update() File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/googletrans/gtoken.py", line 59, in _update code = unicode(self.RE_TKK.search(r.text).group(1)).replace('var ', '') AttributeError: 'NoneType' object has no attribute 'group' 

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