| import pandas as pd |
| import matplotlib.pyplot as plt |
| |
| |
| plt.rcParams['font.sans-serif'] = ['SimHei'] |
| |
| plt.rcParams['axes.unicode_minus'] = False |
| |
| plt.figure(figsize=(11, 8)) |
| |
| |
| path = r"C:\work\python\matplotlib_files\01.柱状图.xlsx" |
| data = pd.read_excel(path) |
| print(data) |
| |
| |
| data.sort_values('分数', inplace=True, ascending=False) |
| |
| plt.bar(data.姓名, data.分数) |
| plt.show() |
- 切换为.conda\envs\dev环境后报错如下
| Traceback (most recent call last): |
| File "C:\work\PythonProject\demo\day23\matplotlib学习.py", line 21, in <module> |
| plt.figure(figsize=(11, 8)) |
| File "C:\Users\ychen\.conda\envs\dev\Lib\site-packages\matplotlib\pyplot.py", line 934, in figure |
| manager = new_figure_manager( |
| ^^^^^^^^^^^^^^^^^^^ |
| File "C:\Users\ychen\.conda\envs\dev\Lib\site-packages\matplotlib\pyplot.py", line 464, in new_figure_manager |
| _warn_if_gui_out_of_main_thread() |
| File "C:\Users\ychen\.conda\envs\dev\Lib\site-packages\matplotlib\pyplot.py", line 441, in _warn_if_gui_out_of_main_thread |
| canvas_class = cast(type[FigureCanvasBase], _get_backend_mod().FigureCanvas) |
| ^^^^^^^^^^^^^^^^^^ |
| File "C:\Users\ychen\.conda\envs\dev\Lib\site-packages\matplotlib\pyplot.py", line 280, in _get_backend_mod |
| switch_backend(rcParams._get("backend")) # type: ignore[attr-defined] |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| File "C:\Users\ychen\.conda\envs\dev\Lib\site-packages\matplotlib\pyplot.py", line 343, in switch_backend |
| canvas_class = module.FigureCanvas |
| ^^^^^^^^^^^^^^^^^^^ |
| AttributeError: module 'backend_interagg' has no attribute 'FigureCanvas'. Did you mean: 'FigureCanvasAgg'? |
- 解决方案:matplotlib切换图形界面显示终端TkAgg
| import pandas as pd |
| |
| import matplotlib |
| matplotlib.use('TkAgg') |
| import matplotlib.pyplot as plt |
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