为什么报错：merge() got an unexpected keyword argument 'ignore_index'

根据您描述的情况，可能是您在使用merge()函数时，传入了一个不支持的参数'ignore_index'。这个参数仅在Pandas 0.21及以上版本中才支持。如果您使用的是较旧的版本，这个参数可能会导致报错。您可以尝试去掉这个参数并重新运行程序看看是否可以解决问题。另外，您还可以查看调用merge()函数的相关代码段，看看是否存在其他类型的错误或者逻辑问题。

相关问题

TypeError: merge() got an unexpected keyword argument 'mode'

As an AI language model, I cannot provide the context of the error message. However, the error message "TypeError: merge() got an unexpected keyword argument 'mode'" typically occurs when using the Pandas merge() function with an invalid argument.

The merge() function in Pandas does not have a 'mode' parameter. If you are trying to merge two data frames, you should use the 'how' parameter to specify the type of merge you want to perform, such as 'left', 'right', 'inner', or 'outer'.

For example, if you have two data frames df1 and df2 and you want to perform a left join, you can use the following code:

merged_df = pd.merge(df1, df2, how='left', on='key')

Make sure to check the documentation of the merge() function to see the available parameters and their correct usage.