Did you encounter AttributeError: module ‘urllib’ has no attribute ‘urlopen’? Don’t worry.
This error is common and there are various ways to fix it.
In this article, we will go over what error means, why it occurs, and how to fix it.
Before we proceed to attributeerror let’s know first what is ‘urlopen’…
What is Urlopen
urlopen is a function that is part of the urllib module of python.
Further, this function is utilized to open URLs, thus returns a file-like object which contains the data from the URL.
In addition, the ‘urlopen’ function is part of the ‘urllib2’ module in Python 2.
However, in Python 3, the ‘urlopen’ function has been moved to the ‘urllib.request’ module.
This indicates we need to use ‘urllib.request.urlopen()’ instead of ‘urllib.urlopen()’.
What is Attributeerror: module urllib has no attribute urlopen?
The AttributeError: module ‘urllib’ has no attribute ‘urlopen’ error occurs when we are trying to use the urlopen in Python 3.
Along with the old syntax of urllib.urlopen().
Unfortunately, this will not work since in Python 3 urlopen is not part of urllib module anymore.
Here is how this error occurs:
import urllib
response = urllib.urlopen('http://www.example.com/')
Output:
Possible reasons why this error occur
This error occurs which could be due to a few different reasons:
- A typo in the function name (e.g.
urllib.urlopenninstead ofurllib.urlopen)
- A version mismatch (e.g.
urllib2.urlopenis used instead ofurllib.urlopen)
- A problem with the Python environment (e.g. the
urllibmodule is not installed or is not accessible)
How to fix Attributeerror: module urllib has no attribute urlopen
To solve the AttributeError: module ‘urllib’ has no attribute ‘urlopen’ error, it needs to use the correct syntax for Python 3.
Apparently, we will use ‘urllib.request.urlopen()’ instead of ‘urllib.urlopen()’.
Here is an example using the correct syntax:
import urllib.request
response = urllib.request.urlopen('http://www.example.com/')
html = response.read()
print(html)In the code above, we import the urllib.request module. Hence, to open the Url we use the ‘urlopen()’ function.
Then the read() method read the data from the Url, which prints it to the console.
Example Output:
b'<!doctype html>\n<html>\n<head>\n <title>Example Domain</title>\n\n <meta charset="utf-8" />\n <meta http-equiv="Content-type" content="text/html; charset=utf-8" />\n <meta name="viewport" content="width=device-width, initial-scale=1" />\n <style type="text/css">\n body {\n background-color: #f0f0f2;\n margin: 0;\n padding: 0;\n font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;\n \n }\n div {\n width: 600px;\n margin: 5em auto;\n padding: 2em;\n background-color: #fdfdff;\n border-radius: 0.5em;\n box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);\n }\n a:link, a:visited {\n color: #38488f;\n text-decoration: none;\n }\n @media (max-width: 700px) {\n div {\n margin: 0 auto;\n width: auto;\n }\n }\n </style> \n</head>\n\n<body>\n<div>\n <h1>Example Domain</h1>\n <p>This domain is for use in illustrative examples in documents. You may use this\n domain in literature without prior coordination or asking for permission.</p>\n <p><a href="https://www.iana.org/domains/example">More information...</a></p>\n</div>\n</body>\n</html>\n'Other potential attribute errors with urllib
Since the ‘AttributeError: module ‘urllib’ has no attribute ‘urlopen’’ error is the most common error with urllib…
There are other potential attribute errors that we may encounter.
One of these conflicts with other modules is ‘urllib3’ or ‘request’.
To avoid the naming error, use the right syntax when importing modules.
For instance, when using urllib use this:
import urllib3Meanwhile when using request, import like this:
import requestsIt is important to check the imports when encountering the urllib error to check if the module and function names are right.
FAQS
The urllib library is a Python module that provides a high-level interface for accessing and retrieving data from the Internet.
Yes, if you are using Python 2, you can use urllib2.urlopen instead of urllib.urlopen.
You can fix this error message by importing the urllib.request module, checking your Python version.
As well as installing the urllib library if it is not already installed, or checking for any naming conflicts.
Conclusion
In this article, we have covered what the ‘AttributeError: module ‘urllib’ has no attribute ‘urlopen’’ error means, why it occurs, and how to fix it.
By following the tips and examples provided in this article, you should be able to avoid and fix attribute errors with urllib.
We hope you’ve learned a lot from this article.
If you are finding solutions to some errors you might encounter we also have Attributeerror: ‘dict’ object has no attribute ‘read’.
Thank you for reading 🙂
Requests/httpx AttributeError patterns
HTTP client AttributeErrors usually come from misuse of response objects, session vs single-request patterns, or async vs sync method confusion.
Common triggers
- response.json vs response.json().
response.jsonis the method; call with parens:response.json(). - response.text vs response.content. Both exist but different types (str vs bytes).
- Session vs Response. Session objects have different methods than Response.
- httpx async client sync methods. httpx.AsyncClient.get() must be awaited; sync httpx.Client.get() returns directly.
Diagnostic pattern
# BAD — treating .json as attribute
import requests
r = requests.get("https://api.example.com/data")
data = r.json # returns bound method, not data
data["key"] # AttributeError or TypeError
# GOOD — call as method
data = r.json()
print(data["key"])
# Modern httpx pattern (async)
import httpx
async def fetch():
async with httpx.AsyncClient() as client:
r = await client.get("https://api.example.com/data")
return r.json() # await client.get() returns Response with sync .json()
Best practices
- Check status before parsing.
r.raise_for_status()thenr.json(). - Use Session for repeated calls. Connection pooling saves time.
- Consider httpx. Same API as requests plus async and HTTP/2 support.
- Add timeouts. Requests defaults to no timeout — always specify.
Official documentation
Frequently Asked Questions
What is Python AttributeError and what causes it?
AttributeError is raised when you access an attribute or method that doesn’t exist on the object. Most common cause: calling a method on None (NoneType has no attribute X). Other causes: typo in method name, wrong object type (str when you expected list), or using a feature removed in a newer library version. The error names exactly which type and which missing attribute.
How do I fix ‘NoneType object has no attribute’?
The variable you’re accessing is None, but you expected an object. Trace back to where it was assigned: a function returning None instead of an object (forgot to return), a database query returning no rows (Model.objects.first() returns None when empty), or an API call that failed silently. Safe pattern: if obj is not None: obj.method() OR use the walrus operator: if (obj := get_obj()): obj.method().
How do I check if an attribute exists before accessing it?
Use hasattr(obj, ‘attr_name’) for runtime check, or getattr(obj, ‘attr_name’, default) to get-with-default. For frequent attribute checks, consider type hints + mypy/pyright which catch most AttributeErrors at static-analysis time before runtime.
How do I prevent AttributeError from None values?
Three patterns: (1) Always validate function returns (if result is None: raise). (2) Use type hints with Optional[X] to make None-ability explicit. (3) Use the walrus operator + early return: if (val := get_val()) is None: return default; use val. Defensive coding around None-able returns prevents 90% of AttributeError in production.
Where can I find more AttributeError fixes?
Browse the AttributeError reference hub for 170+ specific fixes (NoneType, pandas, NumPy, sklearn, Selenium). For related errors see TypeError. For Python debugging fundamentals see Python Tutorial hub.
Glay Eliver
Programmer & Technical Writer at PIES IT Solution
Glay Eliver is a programmer and writer at PIES IT Solution, author of over 600 tutorials at itsourcecode.com. Specializes in JavaScript tutorials, Microsoft Office how-tos (Excel, Word, PowerPoint), and Python error debugging covering ImportError, TypeError, AttributeError, ModuleNotFoundError, and JavaScript ReferenceError. Authored several of the site’s highest-traffic Excel and MS Office reference articles.
Expertise: JavaScript · MS Excel · MS Word · MS PowerPoint · Python · Python ImportError · Python TypeError · Python AttributeError · ModuleNotFoundError · JavaScript ReferenceError · Pygame
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