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Tikzplotlib module throws attribute error: module 'webcolors' has no attribute 'CSS3_HEX_TO_NAMES'

  • Thread starter Thread starter user25742608
  • Start date Start date
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user25742608

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I would like to convert matplotlib figures to PGFPlots/Tikz figures while using the module tikzplotlib:

Code:
import matplotlib.pyplot as plt
import numpy as np
import tikzplotlib

x = np.linspace(0, 2*np.pi, 51)
y = np.sin(x)

plt.plot(x, y)
plt.xlabel("x")
plt.ylabel("y")

tikzplotlib.save('test.tex')

When I run this code, I get an attribute error:

Code:
AttributeError: module 'webcolors' has no attribute 'CSS3_HEX_TO_NAMES'

The documentations of tikzplotlib and webcolors did not give me an idea to solve this.

I have found related questions to the described attribute error from the webcolors module: 1, 2. Hence, I tried to change in the tikzplotlib file _color.py the call webcolors.CSS3_HEX_TO_NAMES to webcolors.css3_hex_to_names according to the documentation, but that did not work.

Is someone able to reproduce this error or knows a solution for this?

I am working with python 3.9.5, webcolors 24.6.0 and tikzplotlib 0.10.1 in Visual Studio Code Version 1.90.2 on Windows 11.

Thanks!
<p>I would like to convert <code>matplotlib</code> figures to PGFPlots/Tikz figures while using the module <code>tikzplotlib</code>:</p>
<pre><code>import matplotlib.pyplot as plt
import numpy as np
import tikzplotlib

x = np.linspace(0, 2*np.pi, 51)
y = np.sin(x)

plt.plot(x, y)
plt.xlabel("x")
plt.ylabel("y")

tikzplotlib.save('test.tex')
</code></pre>
<p>When I run this code, I get an attribute error:</p>
<pre><code>AttributeError: module 'webcolors' has no attribute 'CSS3_HEX_TO_NAMES'
</code></pre>
<p>The documentations of <a href="https://pypi.org/project/tikzplotlib/" rel="nofollow noreferrer"><code>tikzplotlib</code></a> and <a href="https://webcolors.readthedocs.io/en/1.3.1/" rel="nofollow noreferrer"><code>webcolors</code></a> did not give me an idea to solve this.</p>
<p>I have found related questions to the described attribute error from the <code>webcolors</code> module: <a href="https://stackoverflow.com/questions/70967119/webcolors-has-no-attribute-css3-hex-to-names">1</a>, <a href="https://stackoverflow.com/questions...-me-an-atribute-error-when-the-function-is-sp">2</a>.
Hence, I tried to change in the <code>tikzplotlib</code> file <code>_color.py</code> the call <code>webcolors.CSS3_HEX_TO_NAMES</code> to <code>webcolors.css3_hex_to_names</code> according to the <a href="https://webcolors.readthedocs.io/en/1.3.1/" rel="nofollow noreferrer">documentation</a>, but that did not work.</p>
<p>Is someone able to reproduce this error or knows a solution for this?</p>
<p>I am working with <code>python</code> 3.9.5, <code>webcolors</code> 24.6.0 and <code>tikzplotlib</code> 0.10.1 in Visual Studio Code Version 1.90.2 on Windows 11.</p>
<p>Thanks!</p>
 
You're absolutely right about the cause of the error. The webcolors module changed the function name from CSS3_HEX_TO_NAMES to css3_hex_to_names in newer versions.

There are two ways to fix this issue:

  1. Update tikzplotlib:
The easiest solution is to update tikzplotlib to a newer version. Newer versions are likely to have the fix for the function name change. You can update it using pip:

Bash
pip install --upgrade tikzplotlib<br>
Use code with caution.
content_copy
  1. Modify _color.py (not recommended):
This is not recommended for the long term, but if you can't update tikzplotlib for some reason, you can manually modify the _color.py file within the tikzplotlib installation. However, be aware that this change might be overwritten during future updates.

Here's how to modify _color.py:

  • Locate the tikzplotlib installation directory. This can be found using pip show tikzplotlib in your terminal.
  • Open the _color.py file in that directory with a text editor.
  • Find all occurrences of webcolors.CSS3_HEX_TO_NAMES and replace them with webcolors.css3_hex_to_names.
  • Save the changes.
Recommendation:

Updating tikzplotlib is the recommended approach. It ensures you have the latest bug fixes and features. The manual modification should only be used as a temporary workaround if updating is not possible.
 
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