I tried this code in Spyder (python 3.9)
import networkx as nx
cg= nx.complete_graph(10, create_using=nx.DiGraph())
nx.draw(cg)
but I got an empty graph in the plot console.
I was not able to reproduce the problem:
Moving some of the information from the comments below:
Since it had previously shown the graph and now it doesn't and even Matplotlib graphs show up blank and you are running 5.1.5 (which had a lot of other issues), here are some steps to update Spyder itself:
Go to Anaconda Navigator and add conda-forge to your list of sources (Spyder is not being updated on the default channel now):
Go to the Spyder item in that window and click Upgrade (it's grayed out on my setup because I already have the latest version):
Related
For a training course, I had to install Anaconda and launch Spyder from there. This used to work. However, I want to understand more about Python, because I have little experience with programming environments (I only use R and Stata up to now).
I stumbled on this issue: when I open Spyder directly (presumably I have downloaded a standalone version), most syntax runs well, but I cannot get the 'seaborn' module to work.
I tried pip install seaborn, pip3 install seaborn, conda install seaborn, but to no avail (outside of Anaconda, that is). I also tried updating spyder, homebrew, python and anaconda to the most recent versions. Probably this caused further issues discussed below.
My Python version is 3.9.7 (in terminal), Python3 is 3.9.9 (in terminal and through Anaconda), and through Spyder directly it is 3.9.5. Spyder IDE is 5.2.1, under Anaconda it is 5.1.5. I have no idea why these are all different, where to find the right paths, and how to update the Spyder version of Python and how to add the 'seaborn' module to that environment. It is possible to select a path for the Python interpreter in the Spyder preferences, but which path to take is unclear to me.
In short: how can I get seaborn to work in Spyder without having to rely on Anaconda (which seems a bit bloated to me and is slower to start up)?
Meanwhile, real problems occurred: I can't open Spyder from Anaconda any longer (so seaborn is not totally out of reach). This is the message:
/Users/myname/opt/anaconda3/bin/pythonw: line 3: /Users/myname/opt/anaconda3/python.app/Contents/MacOS/python: No such file or directory
This is the simple syntax I wanted to try:
# Seaborn example
import numpy as np
import pandas as pd
import seaborn as sns
sns.set_theme(style="whitegrid")
rs = np.random.RandomState(365)
values = rs.randn(365, 4).cumsum(axis=0)
dates = pd.date_range("1 1 2016", periods=365, freq="D")
data = pd.DataFrame(values, dates, columns=["A", "B", "C", "D"])
data = data.rolling(7).mean()
sns.lineplot(data=data, palette="tab10", linewidth=2.5)
Giving the error message: ModuleNotFoundError: No module named 'seaborn'
Probably this question is related: installed module in anaconda prompt shell but module not found in spyder?
I am working on an M1 MBA under Monterey.
Many thanks
I found the solution, which is to create a new environment and link to it, on the Spyder FAQ:
https://docs.spyder-ide.org/5/faq.html#using-packages-installer
The video was helpful: https://youtu.be/i7Njb3xO4Fw
It seems I can use the Python version installed through conda (in opt/anaconda3) and base an 'environment' on this, adding modules by first activating the environment and then using conda install.
Meanwhile, I still cannot launch Spyder from Anaconda-Navigator.
/Users/myname/opt/anaconda3/bin/pythonw: line 3:
/Users/myname/opt/anaconda3/python.app/Contents/MacOS/python:
No such file or directory
Probably reinstalling will solve this. But I'm good for now.
I recently did a full reinstall of Anaconda distribution because of some user-related problems I was having. I installed the latest 64-bit version for Windows 10, and my Jupyter Notebook stopped autocompleting just about everything (methods, library names, object attributes, etc.).
My current version is 7.19.0.
>>> conda list ipython
# packages in environment at D:\Users\my_user\Anaconda3:
#
# Name Version Build Channel
ipython 7.19.0 py38hd4e2768_0
ipython_genutils 0.2.0 pyhd3eb1b0_1
Prior to reinstalling, I was able to press the tab key when typing the first few characters of an object/library and the IDE would display a dropdown list of objects that started with the same string. I cannot get said list to display on the current version.
For some reason however, when I type a function's name, I can still press shift + tab to display the docstring and expected arguments. It's only the dropdown list that disappeared.
I have not been able to find a solution (despite other users are having this issue).
I normally use PyCharm for python coding, but just for the heck of it, I tried to use Visual Studio Code today, and I'm having some problems.
So I followed the steps shown in the "Getting Started with Python in VS Code" page, and I copied this to my new python project:
import matplotlib.pyplot as plt
import matplotlib as mpl
import numpy as np
x = np.linspace(0, 20, 100) # Create a list of evenly-spaced numbers over the range
plt.plot(x, np.sin(x)) # Plot the sine of each x point
plt.show() # Display the plot
just to test if it works well, and for some random reason, whenever I run this code through terminal/cmd in VSCode, I get this:
ImportError: Missing required dependencies ['numpy']
BUT when I use the Debug Mode, it seems to work perfectly fine.
similar thing happened when I tried to run my previous projects through VSCode. So I thought maybe it was just the problem with my environment, so I changed it to the one where I have my tools installed, but nope, I still got the error.
I tried uninstalling then installing again and that didn't work as well.
I Seriously don't know what's happening right now. Why does it work well in Debug Mode but not in terminal/cmd? does anyone know what to do in this situation?
Thanks!
...In Python, packages are how you obtain any number of useful code libraries, typically from PyPI. For this example you use the matplotlib and numpy packages to create a graphical plot as is commonly done with data science. (Note that matplotlib cannot show graphs when running in the Windows Subsystem for Linux as it lacks the necessary UI support.)
Return to the Explorer view (the top-most icon on the left side, which shows files), create a new file called standardplot.py, and paste in the following source code:
import matplotlib.pyplot as plt
import matplotlib as mpl
import numpy as np
x = np.linspace(0, 20, 100) # Create a list of evenly-spaced numbers over the range
plt.plot(x, np.sin(x)) # Plot the sine of each x point
plt.show() # Display the plot
Tip: if you enter the above code by hand, you may find that auto-completions change the names after the as keywords when you press Enter at the end of a line. To avoid this, type a space, then Enter.
Next, try running the file in the debugger using the "Python: Current file" configuration as described in the last section. (If you still have "stopOnEntry": true in that configuration, you need to select the run command again to continue.)
Unless you're using an Anaconda distribution or have previously installed the matplotlib package, you should see the message, "ModuleNotFoundError: No module named 'matplotlib'". Such a message indicates that the required package isn't available in your system.
To install the matplotlib package (which also installs numpy as a dependency), stop the debugger and run Terminal: Create New Integrated Terminal from the Command Palette (⌃⇧(Windows, Linux Ctrl+Shift+))). This command opens a command prompt for your selected interpreter. Then enter the following commands as appropriate for your operating system (commands may require elevation if the Python interpreter is installed in a protected area of the file system):
Note: If you are unable to install the package or encounter other problems, please file an issue on GitHub so we can help you investigate.
# Don't use with Anaconda distributions because they include matplotlib already.
# macOS
sudo python3 -m pip install matplotlib
# Windows (may require elevation)
py -3 -m pip install matplotlib
# Linux (Debian)
sudo apt-get install python3-tk
python -m pip install matplotlib
from: https://code.visualstudio.com/docs/python/python-tutorial
Got this error and was able to fix it by running conda init in the Python Debug Console terminal, and then closing the terminal before starting a new debug session.
In VS Code undee Windows open Terminal -> New Terminal and run
pip3 install pandas
and then
pip3 install matplotlib
While installing pandas, numpy will be installed as well
I believe it may have something to do with the PATH variables. I just had the same problem in Windows 10 and found out that if I launch VS Code through an anaconda prompt it works just fine, no need to mess around with the PATH variables.
So, instead of opening VS Code through the start menu, just open an anaconda prompt (or anaconda shell), cd to your directory and type code .. That solved my issue.
When searching about this issue, I came across some questions asking the opposite, i.e., package opens in iPython but not in Jupyter Notebook. But in my case, its the opposite. That's why I posted this question.
I added path\to\anaconda3 and path\to\anaconda3\Lib\site-packages in the environment variable, but it doesn't solve the issue.
I can see the packages in the site-packages folder:
But I just can't import some of the packages in iPython:
or with python in the anaconda cmd:
But it works fine in Jupyter Notebook:
What do/can I do to fix this?
Here's some more info if it helps:
(base) C:\Users\h473>where python
C:\Users\h473\AppData\Local\Continuum\anaconda3\python.exe
(base) C:\Users\h473>where conda
C:\Users\h473\AppData\Local\Continuum\anaconda3\Library\bin\conda.bat
C:\Users\h473\AppData\Local\Continuum\anaconda3\Scripts\conda.exe
(base) C:\Users\h473>where pip
C:\Users\h473\AppData\Local\Continuum\anaconda3\Scripts\pip.exe
P.S.: It doesn't happen for all packages, only some packages, as shown for pandas, numpy and matplotlib in the screenshot below.
When you are using matplotlib (and seaborn is built on top of it) it needs to use a so called backend that is used to display the actual GUI with the plot in it once you execute for example matplotlib.pyplot.show().
When you are running a Jupyter Notebook with matplotlib in inline mode (default I think, but not sure), then a Jupyter specific backend is used (module://ipykernel.pylab.backend_inline). That makes sense, since the plots should not appear in separate windows, but be displayed inside the notebook itself.
When you are in an interactive python or iPython session however, Qt5 was used as
import matplotlib
print(matplotlib.rcParams["backend"]) # this prints the backend that would be loaded when trying anything with pyplot
has revealed. Since you get the error youa re getting, it looks like your QT5 installation is broken. You can try to reinstall them using the conda commands, but for now you could also fall back to using a different backend, that you need to specify before trying to load seaborn:
import matplotlib
matplotlib.use("TkAgg") #use backend TkAgg
import seaborn
You can also change the default backend being loaded to TkAgg by creating a matplotlibrc file in C:\Users\<your name>\.matplotlib\ with
backend : TkAgg
in it.
I'm using mpld3 to visualize interactive plots in ipython notebook
It used to work fine. I installed a new computer, with the latest versions of Ipython and Matplotlib.
But when I run:
enable_notebook()
plot([1,2],[1,2])
instead of getting a plot I get only:
Out[8]: [<matplotlib.lines.Line2D at 0x5cb0850>]
what am I doing wrong?
This is probably related to upgrading the library, and having old versions of the javascript hanging around. We haven't put it up on the mpld3 website yet, but you can see some relevant information in the FAQ section of the mpld3 git repository.