python runtime_error ai_generated true

RuntimeWarning: 已打开超过20个图形。通过pyplot接口(matplotlib.pyplot)创建的图形会保留直到显式关闭，可能消耗过多内存。

RuntimeWarning: More than 20 figures have been opened. Figures created with the pyplot interface (matplotlib.pyplot) are retained until explicitly closed and may consume too much memory.

ID: python/matplotlib-memory-leak-animation

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80%修复率
86%置信度
0证据数
2024-06-01首次发现

版本兼容性

版本状态引入弃用备注
3.8 active — — —
3.9 active — — —

根因分析

在循环中创建了大量图形但未关闭，导致内存累积。

English

Creating many figures in a loop without closing them, leading to memory accumulation.

generic

解决方案

  1. 95% 成功率 Close figures after use with plt.close() 
    for i in range(100): plt.figure(); plt.plot([1,2,3]); plt.close()
  2. 90% 成功率 Use plt.close('all') at the end of the loop 
    for i in range(100): plt.figure(); plt.plot([1,2,3]); plt.close('all')

无效尝试

常见但无效的做法:

  1. Increasing the warning threshold via rcParams 90% 失败

    This silences the warning but does not fix the memory leak.

  2. Using plt.ioff() to disable interactive mode 70% 失败

    This only affects display, not memory management.