[PYTHON] [Note] How to deal with unicode error and No such file or directory (output table to excel file with pandas)

[Note] How to deal with unicode error and No such file or directory

What to do about the error you faced when generating the file with the pandas to_excel method.

You can output two or more sheets in one file, Use "Excel Writer" to add a sheet to an existing file.

At this time, the above error occurred in the path setting.

I was addicted to it, so make a note of the cause and solution.

-The "~" that points to the home directory cannot be used. └ Described in "C: / Users /" ・ When using a backslash (or yen mark), describe it with "//" (\) └ Escape with one └ "/" can be used.

It seems that "~" can be used with to_excel and read_excel, but it cannot be used with Excel Writer.

It can be used when specifying the path with the read_excel method, but it cannot be used with Excel Writer.

code

df2 = df.copy()
with pd.ExcelWriter('~/Desktop/GA-demo.xlsx') as writer:  
    df.to_excel(writer, sheet_name='AAA')
    df2.to_excel(writer, sheet_name='BBB')

error

FileNotFoundError: [Errno 2] No such file or directory: '~/Desktop/GA-demo.xlsx'

code

df2 = df.copy()
with pd.ExcelWriter('~\\Desktop\\GA-demo.xlsx') as writer:  
    df.to_excel(writer, sheet_name='AAA')
    df2.to_excel(writer, sheet_name='BBB')

error

FileNotFoundError: [Errno 2] No such file or directory: '~/Desktop/GA-demo.xlsx'

OK

df2 = df.copy()
with pd.ExcelWriter('C:/Users/name/Desktop/GA-demo3.xlsx') as writer:  
    df.to_excel(writer, sheet_name='AAA')
    df2.to_excel(writer, sheet_name='BBB')

I get this error when I copy and paste the folder path.

** ▼ Error ** For example, if you specify the path as follows

code

df2 = df.copy()
with pd.ExcelWriter('C:\Users\name\Desktop\GA-demo.xlsx') as writer:  
    df.to_excel(writer, sheet_name='AAA')
    df2.to_excel(writer, sheet_name='BBB')

error

SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

** Backslash "" is for escaping. If you want to recognize it as a character, you need to use "\". ** **

OK！

df2 = df.copy()
with pd.ExcelWriter('C:\\Users\\name\\Desktop\\GA-demo2.xlsx') as writer:  
    df.to_excel(writer, sheet_name='AAA')
    df2.to_excel(writer, sheet_name='BBB')

The description can be either of the following. 「C:\Users\name\」 「C://Users//name//」