... the file
loc = ("sample.xlsx")
wb = xlrd.open_workbook(loc)
sheet = wb.sheet_by_index(0)
sheet.cell_value(0, 0)
# Extracting number of rows
print(sheet.nrows)
# extract number of columns in Python
print(sheet.ncols)
# extracting all columns name in Python
for i in range(sheet.ncols):
...
