All Questions
10,845
questions
1671
votes
21
answers
3.0m
views
How do I install pip on macOS or OS X?
I spent most of the day yesterday searching for a clear answer for installing pip (package manager for Python). I can't find a good solution.
How do I install it?
- 16.8k
656
votes
39
answers
2.2m
views
bash: pip: command not found
I downloaded pip and ran python setup.py install and everything worked just fine. The very next step in the tutorial is to run pip install <lib you want> but before it even tries to find ...
- 17.6k
512
votes
1
answer
198k
views
Installation Issue with matplotlib Python [duplicate]
I have issue after installing the matplotlib package unable to import matplotlib.pyplot as plt. Any suggestion will be greatly appreciate.
>>> import matplotlib.pyplot as plt
Traceback (...
- 30.9k
495
votes
21
answers
915k
views
How to set Python's default version to 3.x on OS X? [duplicate]
I'm running Mountain Lion and the basic default Python version is 2.7. I downloaded Python 3.3 and want to set it as default.
Currently:
$ python
version 2.7.5
$ python3.3
version 3.3
How ...
- 9,302
452
votes
17
answers
1.1m
views
How to uninstall Python 2.7 on a Mac OS X 10.6.4?
I want to completely remove Python 2.7 from my Mac OS X 10.6.4. I managed to remove the entry from the PATH variable by reverting my .bash_profile. But I also want to remove all directories, files, ...
- 20k
416
votes
31
answers
1.4m
views
Error running 'pip install': "ImportError: No module named pip" [duplicate]
OS: Mac OS X 10.7.5 (Lion)
Python ver: 2.7.5
I have installed setuptools 1.0 with ez_setup.py from https://pypi.python.org/pypi/setuptools.
Then I downloaded pip.1.4.1 pkg from https://pypi.python....
- 4,161
389
votes
21
answers
1.1m
views
How to install PIL with pip on Mac OS?
I am trying to install PIL (the Python Imaging Library) using the command:
sudo pip install pil
but I get the following message:
Downloading/unpacking PIL
You are installing a potentially insecure ...
- 3,927
363
votes
32
answers
628k
views
Virtualenv Command Not Found
I couldn't get virtualenv to work despite various attempts. I installed virtualenv on MAC OS X using:
pip install virtualenv
and have also added the PATH into my .bash_profile. Every time I try to ...
- 4,984
327
votes
17
answers
684k
views
socket.error: [Errno 48] Address already in use
I'm trying to set up a server with python from mac terminal.
I navigate to folder location an use:
python -m SimpleHTTPServer
But this gives me error:
socket.error: [Errno 48] Address already ...
- 4,251
315
votes
15
answers
336k
views
pip installs packages successfully, but executables not found from command line
I am working on mac OS X Yosemite, version 10.10.3.
I installed python2.7 and pip using macport as done in
http://johnlaudun.org/20150512-installing-and-setting-pip-with-macports/
I can ...
- 3,279
288
votes
30
answers
628k
views
certificate verify failed: unable to get local issuer certificate
I am trying to get data from the web using python. I imported urllib.request package for it but while executing, I get error:
certificate verify failed: unable to get local issuer certificate (_ssl.c:...
- 3,177
260
votes
22
answers
603k
views
Could not install packages due to an EnvironmentError: [Errno 13]
In my MacOS Mojave terminal I wanted to install a python package with pip. At the end it says:
You are using pip version 10.0.1, however version 18.1 is available.
You should consider upgrading via ...
- 2,743
251
votes
26
answers
123k
views
Broken references in Virtualenvs
I recently installed a bunch of dotfiles on my Mac along with some other applications (I changed to iTerm instead of Terminal, and Sublime as my default text editor) but ever since, all my virtual ...
- 4,000
244
votes
25
answers
110k
views
Cannot install Lxml on Mac OS X 10.9
I want to install Lxml so I can then install Scrapy.
When I updated my Mac today it wouldn't let me reinstall lxml, I get the following error:
In file included from src/lxml/lxml.etree.c:314:
/private/...
- 2,674
237
votes
15
answers
137k
views
"ERROR:root:code for hash md5 was not found" when using any hg mercurial commands
When trying to use any hg Mercurial commands on the console, I keep getting this error.
I installed Python using Homebrew and I am running Mac OS Catalina v. 10.15.1.
Any reference would be ...
- 3,688
237
votes
18
answers
515k
views
How can I fix the "zsh: command not found: python" error? (macOS Monterey 12.3, Python 3.10, Atom IDE, and atom-python-run 0.9.7)
Since I got the macOS v12.3 (Monterey) update (not sure it's related though), I have been getting this error when I try to run my Python code in the terminal:
I am using Python 3.10.3, Atom IDE, and ...
- 3,964
237
votes
10
answers
188k
views
How do you see the entire command history in interactive Python?
I'm working on the default python interpreter on Mac OS X, and I Cmd+K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history ...
- 2,968
231
votes
9
answers
245k
views
Why am I getting "Permission denied" when activating a venv?
I just started a new python project and created a venv inside the project folder by running virtualenv venv in the terminal. However, when I run venv/bin/activate I get a permission denied error.
I ...
- 3,024
224
votes
22
answers
974k
views
How to change default Python version?
I have installed Python 3.2 on my Mac. After I run /Applications/Python 3.2/Update Shell Profile.command, it's confusing that when I type python -V in Terminal, it says Python 2.6.1 which is not what ...
- 3,752
224
votes
14
answers
510k
views
How to uninstall Anaconda completely from macOS
How can I completely uninstall Anaconda from MacOS Sierra and revert back to the original Python? I have tried using conda-clean -yes but that doesn't work. I also remove the stuff in ~/.bash_profile ...
- 3,992
216
votes
6
answers
747k
views
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this, and, as you can see, the first command I am told to put in is:
sudo apt-get install python-setuptools
When I do this, it outputs:
sudo: apt-get: command not found
I have no ...
- 2,295
211
votes
10
answers
249k
views
pip or pip3 to install packages for Python 3?
I have a Macbook with OS X El Captain. I think that Python 2.7 comes preinstalled on it. However, I installed Python 3.5 too. When I started using Python 3, I read that if I want to install a package, ...
- 4,272
210
votes
18
answers
231k
views
"OSError: [Errno 1] Operation not permitted" when installing Scrapy in OSX 10.11 (El Capitan) (System Integrity Protection)
I'm trying to install Scrapy Python framework in OSX 10.11 (El Capitan) via pip. The installation script downloads the required modules and at some point returns the following error:
OSError: [Errno ...
- 2,500
200
votes
15
answers
238k
views
How to reinstall python@2 from Homebrew?
I have been having issues with openssl and python@2 with brew, which have explained here (unresolved). The documented workaround to reinstall Python and openssl was not working, so I decided I would ...
- 3,766
190
votes
5
answers
97k
views
Multiprocessing causes Python to crash and gives an error may have been in progress in another thread when fork() was called
I am relatively new to Python and trying to implement a Multiprocessing module for my for loop.
I have an array of Image url's stored in img_urls which I need to download and apply some Google vision....
- 2,643
189
votes
17
answers
146k
views
Open document with default OS application in Python, both in Windows and Mac OS
I need to be able to open a document using its default application in Windows and Mac OS. Basically, I want to do the same thing that happens when you double-click on the document icon in Explorer or ...
- 54.1k
186
votes
25
answers
799k
views
Updating Python on Mac
I wanted to update my python 2.6.1 to 3.x on mac but I was wondering if it's possible to do it using the terminal or I have to download the installer from python website?
I am asking this question ...
- 24.9k
179
votes
3
answers
148k
views
How to install two versions of Anaconda (Python 2 and 3) on Mac OS
I'm relatively new in macOS. I've just installed XCode (for c++ compiler) and Anaconda with the latest Python 3 (for myself). Now I'm wondering how to install properly second Anaconda (for work) with ...
- 3,222
163
votes
8
answers
204k
views
How can I install a previous version of Python 3 in macOS using homebrew?
How can I install a previous version of Python 3 in macOS using brew?
With the command brew install python I got the latest version of Python 3 (currently v3.7.0), but I want the last version of ...
- 13.2k
158
votes
25
answers
141k
views
Where is virtualenvwrapper.sh after pip install?
I'm trying to setup virtualenvwrapper on OSX, and all the instructions and tutorials I've found tell me to add a source command to .profile, pointing towards virtualenvwrapper.sh. I've checked all the ...
- 23.1k
158
votes
12
answers
660k
views
python location on mac osx
I'm a little confused with the python on osx. I do not know if the previous owner of the laptop has installed macpython using macport. And I remembered that osx has an builtin version of python. I ...
- 29k
156
votes
3
answers
466k
views
Reading tab-delimited file with Pandas - works on Windows, but not on Mac
I've been reading a tab-delimited data file in Windows with Pandas/Python without any problems. The data file contains notes in first three lines and then follows with a header.
df = pd.read_csv(...
- 4,353
156
votes
38
answers
194k
views
pip installing in global site-packages instead of virtualenv
Using pip3 to install a package in a virtualenv causes the package to be installed in the global site-packages folder instead of the one in the virtualenv folder. Here's how I set up Python3 and ...
- 8,437
153
votes
10
answers
184k
views
Mac OS X - EnvironmentError: mysql_config not found
First off, yeah, I've already seen this:
pip install mysql-python fails with EnvironmentError: mysql_config not found
The problem
I am trying to use Django on a Google App Engine project. However, ...
- 11.5k
148
votes
17
answers
340k
views
How to install pip for Python 3 on Mac OS X?
OS X (Mavericks) has Python 2.7 stock installed. But I do all my own personal Python stuff with 3.3. I just flushed my 3.3.2 install and installed the new 3.3.3. So I need to install pyserial again. I ...
- 21.9k
146
votes
10
answers
520k
views
Where do I find the bashrc file on Mac?
Hello I am following this page.. I'm installing Python onto my mac so that I can set up a Django / Eclipse development environment. However I am not too sure how to go about executing this step:
The ...
- 1,471
135
votes
22
answers
351k
views
What's a good IDE for Python on Mac OS X? [closed]
I'm about to start a new job where the coding practices are heavily centered around TDD and refactoring, and whose primary development language is Python. I come from the Java world, and have been a ...
- 17.8k
134
votes
42
answers
407k
views
PySpark: "Exception: Java gateway process exited before sending the driver its port number"
I'm trying to run PySpark on my MacBook Air. When I try starting it up, I get the error:
Exception: Java gateway process exited before sending the driver its port number
when sc = SparkContext() is ...
- 2,945
133
votes
8
answers
227k
views
pip3: bad interpreter: No such file or directory
I am trying to install dependencies using pip3 command
current scenario:
Dev$ which python
/Users/Dev/anaconda/bin/python
Dev$ which python3
/usr/local/bin/python3
Dev$ pip --version
pip 10.0.1 ...
- 2,753
131
votes
28
answers
94k
views
Can't install PIL after Mac OS X 10.9
I've just updated my Mac OS to 10.9 and I discovered that some (all?) of my Python modules are not here anymore, especially the Image one.
So I try to execute sudo pip install pil, but I get this ...
- 1,846
130
votes
6
answers
191k
views
Getting "Permission Denied" when running pip as root on my Mac
I've started to use my Mac to install Python packages in the same way I do with my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files ...
- 12.8k
128
votes
14
answers
116k
views
Mac + virtualenv + pip + postgresql = Error: pg_config executable not found
I was trying to install postgres for a tutorial, but pip gives me error:
pip install psycopg
A snip of error I get:
Error: pg_config executable not found.
Please add the directory containing ...
- 19.6k
127
votes
13
answers
170k
views
What is the most compatible way to install python modules on a Mac?
I'm starting to learn python and loving it. I work on a Mac mainly as well as Linux. I'm finding that on Linux (Ubuntu 9.04 mostly) when I install a python module using apt-get it works fine. I can ...
- 13.3k
121
votes
18
answers
190k
views
Mac OSX python ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)
Many operations in Python require accessing things via https. This includes pip install command, or just using http.client.HTTPSConnection, or any modules or applications that use these things ...
- 6,797
118
votes
22
answers
232k
views
pip installation /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory
I don't know what's the deal but I am stuck following some stackoverflow solutions which gets nowhere. Can you please help me on this?
Monas-MacBook-Pro:CS764 mona$ sudo python get-pip.py
The ...
- 37k
118
votes
6
answers
161k
views
Make python3 as my default python on Mac
What I'm trying to do here is to make python3 as my default python. Except the python 2.7 which automatically installed on mac, I installed python3 with homebrew. This is the website that I'm ...
- 1,443
113
votes
16
answers
99k
views
Error #15: Initializing libiomp5.dylib, but found libiomp5.dylib already initialized
Getting the error message when using matplotlib:
Error #15: Initializing libiomp5.dylib, but found libiomp5.dylib
already initialized
OMP: Hint: This means that multiple copies of the ...
- 3,903
113
votes
10
answers
643k
views
How to run Python script on terminal?
I want to run a Python script in Terminal, but I don't know how? I already have a saved file called gameover.py in the directory "/User/luca/Documents/python".
- 1,317
111
votes
19
answers
86k
views
Can't install psycopg2 package through pip install on MacOS
I am working on a project for one of my lectures and I need to download the package psycopg2 in order to work with the postgresql database in use. Unfortunately, when I try to pip install psycopg2 the ...
- 1,315
110
votes
11
answers
295k
views
SSL: CERTIFICATE_VERIFY_FAILED with Python3 [duplicate]
I apologize if this is a silly question, but I have been trying to teach myself how to use BeautifulSoup so that I can create a few projects.
I was following this link as a tutorial: https://www....
- 1,201