sheetname : string, int, mixed list of strings/ints, or None, default
Strings are used for sheet names, Integers are used in zero-indexed
sheet positions. Lists of strings/integers are used to request
multiple sheets. Specify None to get all sheets. str|int -> DataFrame
is returned. list|None -> Dict of DataFrames is returned, with keys
representing sheets. Available Cases
Defaults to 0 -> 1st sheet as a
DataFrame
1 -> 2nd sheet as a DataFrame
“Sheet1” -> 1st sheet as a DataFrame
[0,1,”Sheet5”] -> 1st, 2nd & 5th sheet as a dictionary of
DataFrames
None -> All sheets as a dictionary of DataFrames