when to pass values such as 'none' to function in python pd.read_excel()

Question

我对一个名为read_excel（）的函数有疑问，这是一个名为sheetnames的参数，我对何时应将“ none”传递给它有疑问。

Answer 1

You you can pass None for

Pass a None to return a dictionary of all available sheets.

check Specifying Sheets :

# Returns a dictionary of DataFrames
df = read_excel('path_to_file.xls',sheet_name=None)

But if pass string none it read sheet name called none :

df = read_excel('path_to_file.xls',sheet_name='none')