sales_management2.py

#Sales Management
import pandas as pd
from datetime import date
import csv
import os 
import sys

def main():
  print('1. User      2. Manager      3. Exit')
  c = input('Enter choice : ')
  if c == '1':
    user()
  elif c == '2':
    p = input('Enter password : ')
    if p == '1234':
      manager()
    else:
      main()
  else:
    quit()

def user():
  print('1. Check products      2. Buy      3.Cancel Order      4.Exit')
  c = input('Enter choice : ')
  if c == '1':
    cproducts()
  elif c == '2':
    buy()
  elif c == '3':
    cancel()
  elif c == '4':
    main()
  else:
    user()

def cproducts():
  I = r'enter_your_directory_here for products.csv'
  with open(I,'r') as cf:
    cw = csv.reader(cf)
    cd = pd.DataFrame(cw)
    print('|----------------------------------------------------|')
    for i in cd.index:
      x = list(cd.loc[i])
      print('PID : ',i)
      print('NAME : ',x[0])
      print('REMARKS : ',x[2])
      print('|----------------------------------------------------|')
  cf.close()
  user()

def buy():
  p = input('Product ID : ')
  n = input('Your name : ')
  a = input('Your address : ')
  t = date.today()
  row = [p,n,a,t]
  print('Kindly pay on delivery')
  ol = r'enter_your_directory_here'
  with open(ol,'a+',newline = '') as cf:
    cw = csv.writer(cf)
    cw.writerow(row)
  cf.close()
  user()

def cancel():
  p = input('Product ID : ')
  n = input('Your name : ')
  a = input('Your address : ')
  t = input('Date : ')
  row = [p,n,a,t]
  l = r'enter_your_directory_here for orders.csv'
  with open(l,'r+') as cf:
    cw = csv.writer(cf)
    cd = pd.read_csv(l)
    for i in cd.index:
      x = list(cd.loc[i])
      if row == x:
        cd.drop([i],inplace = True)
    cf.close()
    with open(l,'w',newline = '') as cf:
      cw = csv.writer(cf)
      for i in cd.index:
        x = list(cd.loc[i])
        cw.writerow(x)
    cf.close()
  user()

def manager():
  print('1. Add      2. Products      3. Delete      4.Check Orders      5.Exit')
  c = input('Enter choice : ')
  if c == '1':
    add()
  elif c == '2':
    products()
  elif c == '3':
    delete()
  elif c == '4':
    corders()
  elif c == '5':
    main()
  else:
    manager()

def add():
  n = input('Name : ')
  c = input('Cost : ')
  d = input('Details : ')
  row = [n,c,d]
  l = r'enter_your_directory_here for products.csv'
  with open(l, 'a+', newline = '') as cf:
    cw = csv.writer(cf)
    cw.writerow(row)
  cf.close()
  manager()

def products():
  l = r'enter_your_directory_here for products.csv'
  with open (l,'r') as cf:
    cw = csv.reader(cf)
    cd = pd.DataFrame(cw)
    print('|----------------------------------------------------|')
    for i in cd.index:
      x = list(cd.loc[i])
      print('PID : ',i)
      print('NAME : ',x[0])
      print('COST : ',x[1])
      print('REMARKS : ',x[2])
      print('|----------------------------------------------------|')
  cf.close()
  manager()

def delete():
  d = int(input('Enter PID : '))
  l = r'enter_your_directory_here for products.csv'
  with open (l,'r') as cf:
    cw = csv.reader(cf)
    cd = pd.DataFrame(cw)
    cd.drop([d],inplace = True)
    cf.close()
    with open(l,'w',newline = '') as cf:
      cw = csv.writer(cf)
      for i in cd.index:
        x = list(cd.loc[i])
        cw.writerow(x)
  cf.close()
  manager()

def corders():
  l = r'enter_your_directory_here for orders.csv'
  with open (l,'r') as cf:
    cw = csv.reader(cf)
    cd = pd.DataFrame(cw)
    print('|----------------------------------------------------|')
    for i in cd.index:
      x = list(cd.loc[i])
      print('PID : ',x[0])
      print('NAME : ',x[1])
      print('ADDRESS : ',x[2])
      print('DATE : ',x[3])
      print('|----------------------------------------------------|')
  cf.close()
  manager()
main()