# Copy from src excel to buffer
for i in range(start_row, end_row + 1):
for j in range(ord(start_col), ord(end_col)+1):
cell = chr(j) + str(i)
buffer[cell] = input_ws[cell].value
# Find the sheet name from file name of input
output_ws_name = os.path.basename(file_path).split('_')[0]