python type_error ai_generated true

TypeError: float() 参数必须是字符串或实数，而不是 'datetime.datetime'

TypeError: float() argument must be a string or a real number, not 'datetime.datetime'

ID: python/matplotlib-date-converter-error

其他格式: JSON · Markdown 中文 · English
80%修复率
85%置信度
0证据数
2024-04-09首次发现

版本兼容性

版本状态引入弃用备注
3.x active — — —

根因分析

在未注册日期转换器的情况下将 naive datetime 对象直接传给 plot()，或在同一轴上混用 datetime 与数值。

English

Passing naive datetime objects directly to plot() without registering a date converter, or mixing datetime with numeric on the same axis.

generic

解决方案

  1. 94% 成功率 
    import matplotlib.dates as mdates
dates = mdates.date2num(dt_list)
ax.plot(dates, values)
ax.xaxis.set_major_formatter(mdates.DateFormatter('%Y-%m-%d'))
  2. 90% 成功率 
    import pandas as pd
pd.plotting.register_matplotlib_converters()
ax.plot(df['date'], df['value'])

无效尝试

常见但无效的做法:

  1. 75% 失败

    Strings become categorical labels, destroying the time axis ordering and tick formatting.

  2. 60% 失败

    Mixing converted and unconverted series still triggers the float() error on the unconverted one.