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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Random error of PyCapsule_New called with null pointer error when using seaborn matplotlib numpy and pandas","articleBody":"# Bug report\r\n\r\n### Bug description:\r\n\r\n```python\r\nimport pandas as pd\r\nimport numpy as np\r\nimport seaborn as sns\r\nimport matplotlib.pyplot as plt\r\nfrom sklearn.datasets import load_diabetes\r\n\r\n\r\ndata = load_diabetes()\r\ndf = pd.DataFrame(data.data, columns=data.feature_names)\r\ndf['target'] = data.target\r\n\r\ndf = df.drop_duplicates()\r\ndf = df.ffill()\r\n\r\ndf.hist(bins=30, grid=False)\r\nplt.suptitle('Histograms of Numerical Features')\r\nplt.show()\r\nsns.pairplot(df[['target', 'age', 'bmi', 's4', 's5']])\r\nplt.suptitle('Pair Plot of Target and Selected Features', y=1.02)\r\nplt.show()\r\ncorr_matrix = df.corr()\r\nsns.heatmap(corr_matrix, annot=True, cmap='coolwarm', fmt='.2f')\r\nplt.title('Heatmap of Correlation Matrix')\r\nplt.show()\r\nsns.boxplot(data=df.select_dtypes(include=[np.number]))\r\nplt.title('Boxplots for Numerical Features')\r\nplt.xticks(rotation=90)\r\nplt.show()\r\nplt.scatter(df['bmi'], df['age'], c=df['target'], cmap='viridis', alpha=0.6)\r\nplt.colorbar(label='Diabetes Progression')\r\nplt.xlabel('BMI')\r\nplt.ylabel('Age')\r\nplt.title('Scatter Plot of BMI vs Age Color-Coded by Target')\r\nplt.show()\r\n```\r\n\r\n#################\r\nThe above code is randomly giving the following error:\r\n```python\r\nTraceback (most recent call last):\r\n  File \"D:/python work/p10.py\", line 20, in \u003cmodule\u003e\r\n    sns.pairplot(df[['target', 'age', 'bmi', 's4', 's5']])\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\seaborn\\axisgrid.py\", line 2119, in pairplot\r\n    grid = PairGrid(data, vars=vars, x_vars=x_vars, y_vars=y_vars, hue=hue,\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\seaborn\\axisgrid.py\", line 1280, in __init__\r\n    fig = plt.figure(figsize=figsize)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\pyplot.py\", line 1022, in figure\r\n    manager = new_figure_manager(\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\pyplot.py\", line 545, in new_figure_manager\r\n    return _get_backend_mod().new_figure_manager(*args, **kwargs)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\backend_bases.py\", line 3521, in new_figure_manager\r\n    return cls.new_figure_manager_given_figure(num, fig)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\backend_bases.py\", line 3526, in new_figure_manager_given_figure\r\n    return cls.FigureCanvas.new_manager(figure, num)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\backend_bases.py\", line 1811, in new_manager\r\n    return cls.manager_class.create_with_canvas(cls, figure, num)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\backends\\_backend_tk.py\", line 479, in create_with_canvas\r\n    with _restore_foreground_window_at_end():\r\n  File \"C:\\Users\\admin\\AppData\\Local\\Programs\\Python\\Python312\\Lib\\contextlib.py\", line 137, in __enter__\r\n    return next(self.gen)\r\n  File \"C:\\Users\\admin\\AppData\\Roaming\\Python\\Python312\\site-packages\\matplotlib\\backends\\_backend_tk.py\", line 43, in _restore_foreground_window_at_end\r\n    foreground = _c_internal_utils.Win32_GetForegroundWindow()\r\nValueError: PyCapsule_New called with null pointer\r\n```\r\nSometime it executes successfully and sometimes it doesn't. If there  is no bug then please provide me solution for this.\r\n\r\n### CPython versions tested on:\r\n\r\n3.12\r\n\r\n### Operating systems tested on:\r\n\r\nWindows","author":{"url":"https://github.com/fx-Chintu","@type":"Person","name":"fx-Chintu"},"datePublished":"2024-07-02T19:54:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/121290/cpython/issues/121290"}