Openpyxl table reading instance

from openpyxl import load_workbook

#  Read data from tables 
def read_data_from_excel(excel_path,sheet_name):
    
    wb = load_workbook(filename=excel_path,read_only=True)
    #  Read the specified page 
    ws = wb[sheet_name]

    #-----------< Print a single cell (A4) Value >-------------------#
    d=ws.cell(row=4,column=1)
    print(d.value) 
    #-----------< Print a single cell (A4) Value >-------------------#
    
    
    #-----------< Store the value of a region in a two-dimensional array >-------------#
    data_arr=[]
    for row in ws.iter_rows(min_row=3,max_row=6,max_col=4):
        tmp=[]          # The values of each row are stored in the array 
        for cell in row:
            tmp.append(cell.value)
        data_arr.append(tmp)    
    return data_arr
    #-----------< Store the value of a region in a two-dimensional array >-------------#

# Call parameters 
excel_path="./test.xlsx"
# Calling method 
data_arr=read_data_from_excel(excel_path,"NVR")  
print(data_arr)