Develop Reference

Getting module 'google.protobuf.descriptor_pool' has no attribute 'Default' in my python script

I am new to python and was using a python script written by someone else. I was running it fine in a different PC. Just had to install coupe of packages including pip3, google-cloud, google-cloud-bigquery and pandas.
Now when I installed the same packages on a different PC, I am unable to run the script. It is showed the following error first:
module = 'google.protobuf.descriptor_pb2' TypeError: expected bytes, Descriptor found
However, when In purged/re-installed/updated packages and also added protobuf3 and protobuf-py3 package, The error has been updated to the following message:
from google.cloud import bigquery
File "/home/mobeen/.local/lib/python3.6/site-packages/google/cloud/bigquery/__init__.py", line 35, in <module>
from google.cloud.bigquery.client import Client
File "/home/mobeen/.local/lib/python3.6/site-packages/google/cloud/bigquery/client.py", line 50, in <module>
import google.cloud._helpers
File "/home/mobeen/.local/lib/python3.6/site-packages/google/cloud/_helpers.py", line 33, in <module>
from google.protobuf import duration_pb2
File "/home/mobeen/.local/lib/python3.6/site-packages/google/protobuf/duration_pb2.py", line 8, in <module>
from google.protobuf import symbol_database as _symbol_database
File "/home/mobeen/.local/lib/python3.6/site-packages/google/protobuf/symbol_database.py", line 193, in <module>
_DEFAULT = SymbolDatabase(pool=descriptor_pool.Default())
AttributeError: module 'google.protobuf.descriptor_pool' has no attribute 'Default'
.Any help or leads in this will be appreciated

I solved the problem by uninstalling protobuf:
pip3 uninstall protobuf
pip3 uninstall python3-protobuf
NB: You should repeat this command until you get a message that there is no package named protobuf.
After that execute:
pip3 install protobuf
Install just the protobuf , don't install python3-protobuf
Hope this solution can help you.

I solved it by first executing twice
pip3 uninstall protobuf
The second time the terminal returned
Found existing installation: protobuf 3.6.1
Not uninstalling protobuf at /usr/lib/python3/dist-packages, outside environment /usr
Can't uninstall 'protobuf'. No files were found to uninstall.
Then I removed protobuf manually
sudo rm -r /usr/lib/python3/dist-packages/google/protobuf*
sudo rm -r /usr/lib/python3/dist-packages/protobuf*
And finally I executed
pip3 install --upgrade protobuf
And the problem was solved

Did you try this too?
"I solved the problem of showed Attribute Error: 'module' object has no attribute 'Default' when import tensorflow after installed by delete redundant protobuf file.
The reason is some google/protobuf/descriptor_pool.py do not have a 'Default' defined. This usually happened at old version of protobuf so I upgraded successfully, but problem not solved. And by checking PATH and search about 'google/protobuf', I found it existed in both "/usr/local/lib/python2.7/dist-packages/google/protobuf/" and "/usr/lib/python2.7/dist-packages/google/protobuf/". Previous one have attribute 'Default' but the second one not.
I tried import google.protobuf and google.protobuf.file, It shows '/usr/lib/python2.7/dist-packages/google/protobuf/init.pyc'. I deleted /usr/lib/python2.7/dist-packages/google/protobuf and tried to import tensorflow, worked."

Actually I've ran into a similar case, we had 2 packages installed protobuf and python3-protobuf. I actually dont know the root cause for this but apparently when you do that:
pip install protobuf
pip install python3-protobuf
that error you described is happening, looks like it gives you some different version, like those two packages have overlapping files, and they override each other or something.
the solution for me was simply to reverse the installation order (make sure to uninstall them both first):
pip install python3-protobuf
pip install protobuf
or just
pip install python3-protobuf protobuf
hope this helps anyone here.

The reason can be that the interpreter that you are using to run the python programm uses the previous version of google.protobuf
You can assure it to run in the interpreter
>>> import google.protobuf
>>> print google.protobuf.__version__
Then compare it running in the terminal
$pip show protobuf
If the versions are different that's the reason
So I suggest deleting this package right from the python interpreter console
>>> pip uninstall protobuf -y
After you can even install the package right from the python console
>>> pip install protobuf
After that you good to go ✌️

No module named 'pandas._libs.tslib'

I am not able to import pandas
C:\Users\Yash\Desktop\Python\Twitter Sentimental Analysis>python import.py
Traceback (most recent call last):
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36\lib\site-packages\pandas\__init__.py", line 26, in <module>
from pandas._libs import (hashtable as _hashtable,
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36\lib\site-packages\pandas\_libs\__init__.py", line 4, in <module>
from .tslib import iNaT, NaT, Timestamp, Timedelta, OutOfBoundsDatetime
ModuleNotFoundError: No module named 'pandas._libs.tslib'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "import.py", line 4, in <module>
import pandas as pd
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36\lib\site-packages\pandas\__init__.py", line 35, in <module>
"the C extensions first.".format(module))
ImportError: C extension: No module named 'pandas._libs.tslib' not built. If you want to import pandas from the source directory, you may need to run 'python setup.py build_ext --inplace --force' to build the C extensions first.
I tried screwing around but this error stayed the same.
I have updated the modules already along with pip and python!
This is the full traceback of the command.
I am currently using python 3.6.6 (downloaded from the official site)
pip version : 18.1 running on windows 10 laptop!!

I faced a similar issue and solved it by manually uninstalling pandas and then installing pandas using pip. You have mentioned that you have only updated pandas. So I assume you haven't tried re-installing it.
While doing so pandas version in my environment changed from 0.23.4 to 0.24.1
My Environment :
python 3.6.7
pip 18.1
Note : I am also a beginner in Python usage. More experienced users may know a better way.
pip uninstall pandas
pip install pandas
The above steps solved my issues and I am able to import pandas.
I checked the release notes in pandas community and it seems like the dependency on tslib has been removed.
Check section 1.5 in the below link and search for tslib.
http://pandas.pydata.org/pandas-docs/version/0.24/pandas.pdf

I faced the same error and resolved it by calling the following commands:
pip uninstall pandas
pip install pandas
pip3 install --upgrade pandas

I was facing the same error. I tried the above solutions didn't work out. Here what worked for me.
If you have two different python env and trying to run files from different env then first you have to uninstall pandas from both env and install them in the new env.
For example, I have installed python3.6 and python3.9, so first I uninstalled pandas from 3.6
sudo pip3.6 uninstall pandas
I repeated this command serval times until all versions of pandas have uninstalled. after that, I install the pandas in 3.9 using this command
/usr/bin/python3.9 -m pip install pandas

ImportError: cannot import name 'opentype' on new installation

I've just created a Google Cloud compute engine, installed google-cloud package with both pip and pip3, and I'm experiencing the following error when launching a script with python3
from google.cloud import bigquery
File "/usr/local/lib/python3.5/dist-packages/google/cloud/bigquery/__init__.py", line 35,
in <module>
from google.cloud.bigquery.client import Client
File "/usr/local/lib/python3.5/dist-packages/google/cloud/bigquery/client.py", line 36, in
<module>
(more traceback lines..)
from pyasn1_modules.rfc2459 import Certificate
File "/usr/local/lib/python3.5/dist-packages/pyasn1_modules/rfc2459.py", line 20, in <modu
le>
from pyasn1.type import opentype
ImportError: cannot import name 'opentype'
On the compute engine the following packages are installed:
pyasn1==0.1.9
pyasn1-modules==0.2.1
google-cloud==0.30.0
google-cloud-bigquery==0.28.0
Which can be the problem here?

Posting my solution in case it helps someone else - this fixed it for me:
pip install --upgrade google-auth-oauthlib
More details discussed here: https://www.raspberrypi.org/forums/viewtopic.php?f=114&t=198933&p=1241439#p1241439

It looks like you have an issue with pyasn1, so you could try installing a newer version (the latest is 0.4.2), or even reinstalling it manually with:
sudo apt-get --reinstall install python-pyasn1 python-pyasn1-modules
And if you are inside a virtualenv, use instead:
pip install pyasn1 pyasn1-modules

FWIW - Had the same issue - none of the above worked. I eventually discovered that if I did it under sudo it did work.
stracing the original - I found that I had a ~/.local directory which had a pyasn1 directory where it was trying to get the files from, but the opentype.py one did not appear there. When I deleted that whole directory - it started working.
I assume it was some sort of cache that was partial, and out-of-date???

ImportError: Missing required dependencies ['numpy']

I was able to run all scripts successfully which is using pandas , but suddenly all my PANDAS SCRIPTS are giving this error :
Traceback (most recent call last):
File "data_visulaization.py", line 5, in
import pandas as pd
File "/usr/lib64/python2.7/site-packages/pandas/init.py", line 18,
in
raise ImportError("Missing required dependencies {0}".format(missing_dependencies))
ImportError: Missing required dependencies ['numpy']
Recently i have not installed or updated any new things.
Does anyone have a solution for this?
I uninstalled pandas and numpy and re-installed them but still facing the same issue.

I got this issue on Rasberry PI and found that the root cause was missing library:
import numpy
...
ImportError: libf77blas.so.3: cannot open shared object file: No such file or directory
Then it takes few minute to google the required library source:
sudo apt-get install libatlas-base-dev
I have not checked the solution on any other Linux-es but likely the same method should be applicable. So try to import the faulty library first and see what is missing.

I faced the exact same error and found that I had created a file named 'random.pyc' by mistake in the same directory as that of my PyCharm environment
ayush#ayush-VirtualBox:~/PycharmProjects/untitled$ where "untitled" refers to my project directory. I deleted it and everything fells into place. Hope this helps !
The reason for this was numpy Imports another file called Random by default for building its own dependencies and it mistook my 'random.pyc' for it and replaced it.

I had the same error. Fixed with the following:
python3 -m pip uninstall numpy
python3 -m pip install numpy==1.14.0

use"conda install numpy" in cmd-window if you used Anaconda in your machine. I had encount this problem also and I resolved it by this. May it can help U.

I found the solution , the actual problem is if any of your recent python scripts have generated ".pyc" extension file this error will occur .
solution is to delete those files that's all.

If you are using packages options and it contains pandas or some package depends numpy, you should add required dependencies to the packages.

pip uninstall numpy
pip install numpy
It works

This error will occur when multiple versions of numpy are installed. Check to make sure you only have one version of numpy installed. You can make a test file to check this if you don't want to look through the directories:
import numpy
print("Numpy imported")
If you get an error saying that multiple versions of numpy were detected, then you have multiple versions of numpy installed.
You can fix this by repeatedly calling (not just once)
pip uninstall numpy
until all versions are uninstalled and then use
pip install numpy
to get only the latest version.

try uninstalling pandas and numpy:
pip uninstall pandas
pip uninstall numpy
and install them back:
pip install pandas
pip install numpy

ImportError: matplotlib requires dateutil; import matplotlib.pyplot as plt

Am new to progamming and Python, i keep getting the error below when i run my program. Someone advised i should use pip to solve it. But cant pip get installed using the cmd. Though i suceeded using Powershell but still cant make it work. How do i solve this, any tips will go along way. Thanks
Traceback (most recent call last):
File "<pyshell#0>", line 1, in <module>
from satmc import satmc
File "C:\Python27\starb_models_grid1\satmc.py", line 3, in <module>
import matplotlib.pyplot as plt
File "C:\Python27\lib\site-packages\matplotlib\__init__.py", line 110, in <module>
raise ImportError("matplotlib requires dateutil")
ImportError: matplotlib requires dateutil
Am using version 2.7.3

You need to install various packages to get numpy working correctly.
libsvm-3.17.win32-py2.7
pyparsing-2.0.1.win32-py2.7
python-dateutil-2.2.win32-py2.7
pytz-2013.9.win32-py2.7
six-1.5.2.win32-py2.7
scipy-0.13.3.win32-py2.7
numpy-MKL-1.8.0.win32-py2.7
Matplotlib
Download all the binaries from this link and install and then you will have a working numpy installation.

You're probably looking for:
pip install python-dateutil

The error states that you are missing Dateutil.
This could mean that you did not install Dateutil with pip install python-dateutil or your way to install Python modules. But if you did your pip install and still get the same error it could also mean that DateUtil is installed in a folder where your Python distribution does not expect it.
In my case (Mac OSX) I installed pip with Brew http://brew.sh/. That pip will install the modules in: /usr/local/lib/python2.7/site-packages/
However the standard Mac OSX Python distribution will look for modules in /Library/Python/2.7/site-packages/
Your folders could be different of course, but you can check where Python looks for modules with:
import sys
print sys.path
Check this and see if one of the directories in the list contains the directory where dateutil is installed.
If not add a PYTHONPATH environment variable: Like: PYTHONPATH=/usr/local/lib/python2.7/site-packages/ or the folder where your dateutil is installed

I did pip install python-dateutil, but kept getting the same error. I got past that error by installing from http://www.lfd.uci.edu/~gohlke/pythonlibs/#python-dateutil
Look for the Matplotlib section and install the dependencies you don't have.
Matplotlib is a 2D plotting library.
Requires numpy, dateutil, pytz, pyparsing, six, setuptools, and optionally pillow, pycairo, tornado, wxpython, pyside, pyqt4, ghostscript, miktex, ffmpeg, mencoder, avconv, or imagemagick.