I am running some Python code on Raspberry Pi and now I need real time communication. I have a SignalR hub hosted on Azure and in order to connect to it I am using this python client. Since I am quite new to python I have some lame questions:
After I did pip install signalr-client I tried pip install -r requirements but then nothing happens. I just get an error Could not open requirements file: [Errno 2] No such file or directory: 'requirements' As I understood this is some kind of a file which contains some references but not really sure how it is supposed to execute.
After the failure with installing pip install -r requirements I decided to try it directly as it is right now and I copied the code from the sample (modified with the metadata for my hub). Once I try to run it I get an error on the second line from signalr import Connection saying that there's no such module as signalr. Do you have any idea what could be this and is there any chance for those two to be related?
NOTE: When I execute pydoc modules I can see it there in the list.
Also, regarding python and pip versions I get:
python -V : Python 2.7.13
pip -V : pip 9.0.1 from /usr/lib/python2.7/dist-packages (python 2.7)
Related
I was trying to install pandas using this command:
python -m pip install pandas
Installation starts initially but then goes all red and returns this error:
Could not install packages due to an OSError: [WinError8] Not enough storage is available to process this command
--- Logging error ---
I don't think it's a memory issue because I checked usage and it was at a normal level.
I'm using Python 3.7 on Windows 7.
Any suggestions on how to fix it??
Eureka! I'm posting solution in case anyone encounters the same problem in the future.
After hours of trying a lot of different solutions I have finally succeed even though I still don't know what was the source of this problem.
To install pandas in case of facing error while downloading using pip command first download manually .whl files of pandas from PyPI website:
https://pypi.org/project/pandas/#files
Copy it to the folder that is used as your path in cmd console- don't change name of the file.
In cmd console use:
python -m pip install fullnameofthedownloadedfile.whl --no-deps
Use --no-deps as it's very likely that automatically downloaded dependencies will encounter similar errors during downloading as pandas- you will install them manually instead.
Once this is finished repeat process for numpy and dateutil and any other packages that might be required.
What a relief!!! Happy coding;)
I am trying to install Jinja2 package with following command line
python pip install Jinja2
and I get the error
can't open file 'pip': [Errno 2] No such file or directory
I checked and pip is both in my python Lib and Script so I don't understand.
Also tried
python pip -m install Jinja2
It is not the first time I get the error but I can't remember how I worked it out last time.
Here is a solution from this question. Which is also what miles82 said in this question.
python -m pip install SomePackage
But it doesn't have an explanation. So, to complete that answer, if you type:
python -h
It returns a help text, and we can see that -m means:
-m mod : run library module as a script (terminates option list)
And that's why you type pip as a library module after -m, so you can download your desire package.
(I'm new to python, so if I got some wrong, feel free to correct me).
Currently using twilio sms library so that the the data collected from my house can be sent to my phone. When I ran it from my laptop it worked fine, but after pip importing it onto my Pi and trying to run it I still got the exception:
ImportError no module named 'twilio'
This seems so simple, but I have spent a long time reading through documentation and know I'm just missing something super basic.
from twilio.rest import Client
client = Client("***************", "**************")
client.messages.create(to="++*******",
from_="*******",
body="Pi says hi")
Thanks a ton for anyone who helps me out!
Note: I'm using python 3 for both and raspbian as the OS.
If you are using python3, then the problem is likely that you used pip. pip will install modules for python2. If you want to install to a python3 env, you need to use pip3.
pip3 install twillio
Note:
If you don't already have pip3 installed, you'll need to do that as well.
sudo apt-get install python-pip3
Edit: Yes I know this question already exists, except my question is a bit different and none of the solutions fixed it.
I do most of my Python stuff when I'm at work and not on my personal machine, but I decided to install it on my personal computer as well. I fresh installed python 3.6.1, and created a virtual environment with virtualenv. Then within the virtualenv I tried to pip install urllib (or any module) and I received the error:
(pdbot) C:\Users\user\Documents\pdbot>pip install urllib
Collecting urllib
Using cached urllib-1.21.1.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\user\AppData\Local\Temp\pip-build-50tn0wlb\urllib\setup.py", line 191
s.connect((base64.b64decode(rip), 017620))
^
SyntaxError: invalid token
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\user\AppData\Local\Temp\pip-build-50tn0wlb\urllib\
I read elsewhere that this error had something to do with setuptools not being properly installed. So I ran this to attempt to fix the issue:
easy_install -U setuptools
I ended up receiving an even weirder error next:
(pdbot) C:\Users\zeke\Documents\pdbot>easy_install -U setuptools
Searching for setuptools
Reading https://pypi.python.org/simple/setuptools/
Downloading https://pypi.python.org/packages/a9/23/720c7558ba6ad3e0f5ad01e0d6ea2288b486da32f053c73e259f7c392042/setuptools-36.0.1.zip#md5=430eb106788183eefe9f444a300007f0
Best match: setuptools 36.0.1
Processing setuptools-36.0.1.zip
Writing C:\Users\zeke\AppData\Local\Temp\easy_install-jhg1val_\setuptools-36.0.1\setup.cfg
Running setuptools-36.0.1\setup.py -q bdist_egg --dist-dir C:\Users\zeke\AppData\Local\Temp\easy_install-jhg1val_\setuptools-36.0.1\egg-dist-tmp-8apak7kn
warning: no files found matching '*' under directory 'setuptools\_vendor'
Copying setuptools-36.0.1-py3.6.egg to c:\users\zeke\documents\pdbot\lib\site-packages
Adding setuptools 36.0.1 to easy-install.pth file
Installing easy_install-script.py script to c:\users\zeke\documents\pdbot\Scripts
Installing easy_install.exe script to c:\users\zeke\documents\pdbot\Scripts
error: [WinError 5] Access is denied: 'c:\\users\\zeke\\documents\\pdbot\\Scripts\\easy_install.exe'
This looks like a permissions error, but I ran these both in an administrator command prompt (Windows 10) and got the same result. I am the only user on this computer and I have all admin permissions. Is this virtualenv causing an issue? How do I remedy it?
EDIT: I was able to fix the permissions issue by leveraging the python executable like so:
python -m easy_install -U setuptools
But it didn't fix the python setup.py egg_info issue. I still get this error message when trying to pip install anything:
Command "python setup.py egg_info" failed with error code 1 in C:\Users\user\AppData\Local\Temp\pip-build-50tn0wlb\urllib\
I have tried both python -m pip install urllib and pip install urllib and neither work.
I had the same problem when trying to install urllib, but after doing a pip search urllib, I discovered that the problem was due to the version of urllib. From the search:
$ pip search urllib
...
> urllib5 (5.0.0) - Just increment the number and create a new lib. Never fix the original one.
At the end, a simple
pip install urllib5
within an elevated shell solved it.
Your problem has to do with permissions. The related/similar tools setup_tools, easy_install, and pip all tend to set a default set of permissions on files and folders they try to create in the package installation folder(s), rather than trying to match access permissions of the location they're installing in.
On Linux systems, where files and folders individually have permissions, this is frequently bypassed with the sudo command. On Windows, the equivalent is to run the installer as an Administrator. Since you're in the console, you have to open a console with Administrator privileges to run the pip command in.
Notable under Windows, the modules installed with pip from an Administrator console are still accessible to all users of the system that have the proper path in the PYTHONPATH system environment variable. Under Linux however, the problem is exacerbated by the fact that the files themselves may not be created with read and execute access for other users and may need to have their permissions manually modified after installation.
WARNING: urllib vs urllib2 vs urllibx
Both other answers claim that the problem is you're not specifying the correct "version" of the module in the call to pip. Neither is correct, as the error clearly indicates an installation folder access permissions violation causing the failure, but they also incorrectly recommended VERY unsafe behavior.
pip install urllib != pip install urllib5 these are two completely different packages.
The documentation for pip (https://packaging.python.org/tutorials/installing-packages/#id17) clearly says the way to specify a module version explicitly is pip install 'urllib==5'.
As part of how the package management engine implemented by pip works, running the command pip install urllib will always try to use the latest version of the urllib package, so you shouldn't need to specify the version unless you have some reason that you need a very specific version of the module.
There are two points to make in order to answer your question:
1. You are lucky you did not install that package!
The package you were trying to install was a maliciously created python package that was designed to look like a real package (in this case urllib3). If you had installed it, the package would have operated as normal except it would have sent some basic information about the system on which you installed the package to a URL (you can see more details on this here). You can read more about this fake package at either of the following links:
https://app.threatconnect.com/auth/incident/incident.xhtml?incident=5256822&owner=Common%20Community (you can sign up for a free account to view this one)
http://www.nbu.gov.sk/skcsirt-sa-20170909-pypi/index.html
Sending basic information about your systems to an unknown source isn't the worst thing you could do, but is certainly something you want to avoid when possible.
2. To properly install a package...
Specifically urllib:
To install urllib, you need to specify the version of the package you would like to install. For example, pip install urllib3.
Any package in general:
As #Elisabete Coelho suggested, you can use the pip search <package-name> feature to view the available packages. This is not perfect, however, as it may list malicious libraries like the one you were trying to install. A good guideline is that you should follow the installation instructions in a package's documentation closely to avoid any unforeseen issues. This is just an unfortunate necessity of living in a world where people make pretend python packages.
I have installed python 2.7.10 with PATH access and correctly installed twilio. However, when I try to execute a code I get this error message
Traceback (most recent call last):
File "C:\Users\tmslvo\Google Drive\Desktop\send text.py", line 1, in <module>
from twilio.rest import TwilioRestClient
ImportError: No module named twilio.rest
Now I read that a reason might be that python can't find the twilio package so I tried the
which -a python
which -a twilio
commands (in my Windows command prompt) in which case I get
'which' is not recognized as an internal or external command,
operable program or batch file.
Does anybody have an idea of what I'm doing wrong?
Thank you!
Twilio developer evangelist here.
I think your problem will be that somehow when you installed the library, it failed silently(?). A few things to keep in mind:
When installing Python libraries, always make sure you use pip.
Also, check that none of your files within the project are actually called twilio.py as this will conflict with the actual library.
Check that you're using the version of Python you think you're using by running python --version
All that failing, run the installation again, and all going well (without errors), you should be able to test it quickly with the following code.
import twilio
import twilio.rest
try:
client = twilio.rest.TwilioRestClient(account_sid, auth_token)
message = client.messages.create(
body="Hello World",
to="+14159352345",
from_="+14158141829"
)
except twilio.TwilioRestException as e:
print e
try this: sudo pip3 install twilio --upgrade
I had this problem as well.
In my case, I had named my file twilio.py and that is what caused the error.
Renaming the file to send_sms.py ( or any other name of your choice) will resolve the issue!
Close and then relunch all IDLE instances.
This sounds obvious but it worked for me, since the installations of components were successful
I ran into this same issue. I had used easy_install instead of pip to install twilio which was the problem. To fix this I ran pip uninstall twilio and reinstalled using pip.
rename file name other than twilio.py
EX:send_sms.py
A bit late to the party here but I also ran into this issue.
After some trial and error, it looks like it was due to the pip version I was using. I originally used -
pip3 install twilio.
Now I'm unsure of the underlying reason why this did not work, but it seems that pip3 does not encompass all versions of python 3.x? Using
pip3 list and
pip3.8 list
I noticed I had the twilio module for pip3 but not for pip 3.8.
I used the following and was able to solve the issue
pip3.8 install twilio.
I used pip3.8 because that matched the python3.8 version that I am using.
Pycharm user:
Macs (mid 2017) come with python 2.6 and 2.7 installed. PyCharm uses by default 2.6. When you install twilio (Pip install) the module is installed in python version 2.7. So, when you try to run twilio from PyCharm you get
ImportError: No module named twilio.rest
Solution: change the python interpreter in PyCharm. Go to preferences > project interpreter and from the drop menu Project Interpreter choose python 2.7
I think your pip is not configured properly . You may be getting succefuuly installed message but it is not install where it should be. try pip install --user i am sure it will work for you. pip install may work fine only in virtualenvironment without any config.Try pip install --user package name
#iosCurator
I had first installed twilio with the easy_intall tool
I followed the steps below:
Uninstall twilio with the command pip uninstall twillo
Install twilio with the command pip install twilio
Close the python IDLE and relaunch it.
For the windows user,
I have suggested, pip3 install twilio
Follow these steps (on mac):
Shift + Command + P
search: Configure Language Specific Setting
search: Python
add: "code-runner.runInTerminal": true
That's it!
Ask me any question about it by:
My LinkedIn
I ran into this issue when using poetry for my dependency management. Poetry doesn't recognise it as an existing package yet, hence it won't run your code unless you try the poetry+pip way.
there will be 2 reasons for this
1.make sure you kept right path for python files in environment location
2.install twilio
commands:
1.pip3 install twilio
(or)
pip install twilio
2.python otpv.py