python config_error ai_generated true

ValueError: 'loc'参数必须是字符串或0到10之间的整数，但您提供了'center left'，这是一个拼写错误的有效字符串。

ValueError: The 'loc' parameter must be a string or an integer between 0 and 10, but you provided 'center left' which is a valid string but misspelled.

ID: python/matplotlib-legend-loc-error

其他格式: JSON · Markdown 中文 · English
80%修复率
82%置信度
0证据数
2024-04-20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

图例位置的'loc'字符串区分大小写，必须是预定义字符串之一，例如'upper left'、'lower right'等；拼写错误（如'centr left'）会导致此错误。

English

The 'loc' string for legend placement is case-sensitive and must be one of the predefined strings like 'upper left', 'lower right', etc.; 'center left' is not valid (should be 'center left'? actually 'center left' is valid? Wait, this error is about misspelling: 'center left' vs 'center left'? Actually 'center left' is valid, but if user typed 'centre left' or 'center left' with extra space, it fails. Let's correct: The error occurs when user provides a string that is not in the allowed list, e.g., 'center left' is valid, but if misspelled as 'centr left', it raises ValueError.

generic

解决方案

  1. 95% 成功率 Use the exact valid string from documentation 
    plt.legend(loc='upper left')  # or 'lower right', 'center', etc.
  2. 90% 成功率 Use a valid numeric code (0-10) for backward compatibility 
    plt.legend(loc=2)  # 2 corresponds to 'upper left'

无效尝试

常见但无效的做法:

  1. Using a numeric code like 10 thinking it maps to 'center' 70% 失败

    Numeric codes are deprecated in newer versions and may not work as expected; also 'center left' is not a single numeric code.

  2. Ignoring case sensitivity and trying 'Upper Left' 80% 失败

    The strings are case-sensitive; 'Upper Left' is not valid, only 'upper left' works.