首页Traceback (most recent call last): File "D:\文档\pythonProject\main.py", line 56, in <module> merge_1=pd.merge([df1,df2,df3,df4,df5],on=['year','month','Stkcd']) TypeError: merge() missing 1 required positional argument: 'right'

Traceback (most recent call last): File "D:\文档\pythonProject\main.py", line 56, in <module> merge_1=pd.merge([df1,df2,df3,df4,df5],on=['year','month','Stkcd']) TypeError: merge() missing 1 required positional argument: 'right'

时间: 2023-11-30 15:02:00 浏览: 163

TypeError: ‘required’ is an invalid argument for positionals 的解决方法

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TypeError: ‘required’ is an invalid argument for positionals 的解决方法当我在使用argparse模块时，遇到了如下错误： import argparse parser = argparse.ArgumentParser(description = 'debug_example') parser.add_argument ('--data_root', default = 'data/path', type = str, required=False, help = 'the dataset path') parser.add_ar

这个错误提示是因为在使用 pd.merge() 函数时，缺少了要合并的右侧 DataFrame。可以将代码修改为类似如下的形式： ```python merge_1 = pd.merge(df1, df2, on=['year', 'month', 'Stkcd']) merge_2 = pd.merge(merge_1, df3, on=['year', 'month', 'Stkcd']) merge_3 = pd.merge(merge_2, df4, on=['year', 'month', 'Stkcd']) merge_4 = pd.merge(merge_3, df5, on=['year', 'month', 'Stkcd']) ``` 这样就可以按照顺序将五个 DataFrame 进行逐一合并，得到最终的结果。

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