MemoryError using OpenPyxl and insert_rows() - python-3.x

Question

I have a script that opens up an excel worksheet (1.353 kB), updates row based on values and inserts new rows based on an index. Unfortunately, I get a MemoryError. Besides, the script is consuming a lot of RAM. Is this based on the code or this based on the library? Thank you for your support.
The error message is as follows:
Traceback (most recent call last):
File "update_worksheet.py", line 42, in <module>
update.add_row(idx)
File "update_worksheet.py", line 30, in add_row
self.__ws.insert_rows(idx)
File ".\Python\Python38-32\lib\site-packages\openpyxl\worksheet\worksheet.py", line 713, in insert_rows
self._move_cells(min_row=idx, offset=amount, row_or_col="row")
File ".\Python\Python38-32\lib\site-packages\openpyxl\worksheet\worksheet.py", line 706, in _move_cells
self._move_cell(row, column, row_offset, col_offset)
File ".\Programs\Python\Python38-32\lib\site-packages\openpyxl\worksheet\worksheet.py", line 802, in _move_cell
self._cells[new_row, new_col] = cell
MemoryError
from openpyxl import load_workbook
import pandas as pd
import time
class UpdateWorksheet():
def __init__(self,path):
self.__wb = load_workbook(path, read_only = False)
self.__ws = self.__wb["WP_Planning"]
self.__df = pd.DataFrame(self.__ws.values)
def search_value_in_col_idx(self, search_string, col_idx=1):
try:
idx = self.__df[self.__df[col_idx]==search_string].index.item()
return idx
except ValueError:
return None
def update_status(self,row_idx, col_idx, status):
self.__ws.cell(row = row_idx, column = col_idx).value = status
def find_last_row(self, key, status):
idx = None
try:
idx = self.__df[self.__df[1]=="HMI"].index.tolist()
except ValueError:
idx = None
return idx[-1]
def add_row(self, idx):
self.__ws.insert_rows(idx)
def save_workbook(self,path):
self.__wb.save(path)
print("finish")
if __name__ == "__main__":
path = './data/TrackingSheet.xlsx'
update = UpdateWorksheet(path)
index = update.search_value_in_col_idx("PFIVEDAIEX-4244",4)
update.update_status(index,7,"Mikey")
idx = update.find_last_row("PFIVEDAIEX-4244","Fixed")
update.add_row(idx)
Edit1:
from openpyxl import load_workbook
from openpyxl import Workbook
import pandas as pd
class UpdateWorksheet():
def __init__(self,path):
self.__path = path
def load_file(self, read_only):
wb = load_workbook(self.__path, read_only)
return wb
# Search line to be updated
def search_value_in_col_idx(self, search_string, col_idx, ws):
df = pd.DataFrame(ws.values)
try:
idx = df[df[col_idx]==search_string].index.item()
return idx
except ValueError:
return None
# Update line attributes
def update_status(self,row_idx, col_idx, status, ws):
if not row_idx is None:
ws.cell(row = row_idx, column = col_idx).value = status
# Find last row for new rows
def find_last_row(self,ws):
df = pd.DataFrame(ws.values)
idx = None
try:
idx = df[df[1]=="HMI"].index.tolist()
except ValueError:
idx = None
return idx[-1]
# Add new rows
def add_row(self,idx,ws):
if idx is not None:
ws.insert_rows(idx, 5)
# Save changes made to workbook
def save_workbook(self,wb):
wb.save(self.__path)
if __name__ == "__main__":
path = './data/TrackingSheet.xlsx'
update = UpdateWorksheet(path)
wb = update.load_file(read_only=True)
idx = update.search_value_in_col_idx("PFIVEDAIEX-4244",4,wb["WP_Planning"])
last_row = update.find_last_row(wb["WP_Planning"])
wb.close()
wb = update.load_file(read_only=False)
update.update_status(idx,7,"Mikey",wb["WP_Planning"])
update.add_row(200,wb["WP_Planning"])
pdate.save_workbook(wb)
wb.close()