Shop Inventory Manager Created

scripts/Shop_Inventory/README.md

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+# SHOP INVENTORY MANAGEMENT IN PYTHON
+
+- I've imported the rsa package.
+- It generates the public and private key. 
+- It then stores the keys in keys/privkey.pem and keys/publickey.pem.
+- The keys are then loaded to the program as publickey and privatekey. 
+- The inputed text or message is encrypted with the public key.
+- Which then is put in the variable ciphertext. 
+- The private key is used to decrypt the message. 
+- Here we also verify the signature of the message and the keys, whether they are signified or not.

scripts/Shop_Inventory/main.py

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+import csv 
+
+def check_unique_Product_ID(Product_ID) :
+
+	file = open('ProductRecords.csv','r',newline = '')
+	Reader_obj = csv.DictReader(file)
+	count = 0
+
+	for line in Reader_obj :
+		if line['Product_ID'] == Product_ID :
+			count += 1												
+
+	if count == 0:
+		return Product_ID   										
+
+	else:
+		print('The Product_ID already exists..!!')
+		print()
+		Product_ID = input('Enter unique Product ID: ')				
+		return check_unique_Product_ID(Product_ID)					
+
+	file.close()
+
+
+def Entry():
+	Data = []
+	Product_ID = (input('Enter the ID of the Product: '))
+	Data.append(check_unique_Product_ID(Product_ID))				
+	
+	Product_Name 	 = input('Enter the Name of the Product: ')
+	Product_Price 	 = int(input('Enter the Price of the Product: '))
+	Product_Quantity = int(input('Enter the Quantity of the Product: '))
+	
+	Data.extend([Product_Name, Product_Price, Product_Quantity])	
+	
+	file = open('ProductRecords.csv', 'a',newline = '')
+	writer_obj = csv.writer(file)					
+	writer_obj.writerow(Data)										
+	file.close()
+	print('Entered data has been successfully recorded..!!!')
+	print()
+
+def Extract_Data(Product_ID) :										
+	print()
+	file = open('ProductRecords.csv','r',newline = '')
+	Reader_obj = csv.DictReader(file)
+
+	for line in Reader_obj:
+		
+		if line['Product_ID'] == str(Product_ID):					
+			for i in line.keys() :
+				
+				print(i , ':' , line[i])							
+
+	file.close()
+	print()
+
+
+def Extract_Quantity(Product_ID) :
+	print()
+	file = open('ProductRecords.csv','r',newline = '')
+	Reader_obj = csv.DictReader(file)
+	for line in Reader_obj:
+		
+		if line['Product_ID'] == str(Product_ID):					
+			print('Quantity of',										
+				line['Product_Name'] ,
+				':',
+				line['Product_Quantity'])							
+	file.close()
+	print()
+
+def Delete_Record(Product_ID) :
+	file = open ('ProductRecords.csv','r+',newline = '')
+	Reader_obj  = csv.reader(file)
+	records = [row for row in Reader_obj][1:]
+	temp_records = []												
+
+	for record in records:
+		if record != []:
+			if record[0] != Product_ID and record != [] :
+				temp_records.append(record)							
+	file.close()
+
+	file = open ('ProductRecords.csv','w+',newline = '')
+	writer_obj = csv.writer(file)
+	writer_obj.writerow(['Product_ID','Product_Name','Product_Price','Product_Quantity'])
+	writer_obj.writerows(temp_records)								
+	print('Record deleted successfully.')
+	file.close()
+
+
+def Update_Price(Product_ID,New_Price) :
+	file = open('ProductRecords.csv','r')
+	Reader_obj = csv.DictReader(file, fieldnames = ['Product_ID','Product_Name','Product_Price','Product_Quantity'])
+
+	Temp_records = []												
+	for line in Reader_obj :
+		Temp_records.append(line)
+
+	file.close()
+
+	for record in Temp_records :
+		if record['Product_ID'] == Product_ID :
+			record['Product_Price'] = New_Price						
+
+	Temp_records = Temp_records[1:]
+	file = open('ProductRecords.csv','w+',newline = '')
+	Writer_obj = csv.DictWriter(file, fieldnames = ['Product_ID','Product_Name','Product_Price','Product_Quantity'])
+	Writer_obj.writeheader()
+	Writer_obj.writerows(Temp_records)								
+	file.close()
+	print('Price has been Updated successfully !!!')
+
+
+def Update_Quantity(Product_ID,New_Quantity) :
+	file = open('ProductRecords.csv','r')
+	Reader_obj = csv.DictReader(file, fieldnames = ['Product_ID','Product_Name','Product_Price','Product_Quantity'])
+
+	Temp_records = []												
+	for line in Reader_obj :
+		Temp_records.append(line)
+
+	file.close()
+
+	for record in Temp_records :
+		if record['Product_ID'] == Product_ID :
+			record['Product_Quantity'] = New_Quantity				
+
+	Temp_records = Temp_records[1:]
+	file = open('ProductRecords.csv','w+',newline = '')
+	Writer_obj = csv.DictWriter(file, fieldnames = ['Product_ID','Product_Name','Product_Price','Product_Quantity'])
+	Writer_obj.writeheader()
+	Writer_obj.writerows(Temp_records)								
+	file.close()
+	print('Quantity has been Updated successfully !!!')
+
+
+while True: 														
+
+	print()
+	print('Press 1 to Insert Product Details: ')
+	print('Press 2 to Fetch Product Details using Product_ID: ')
+	print('Press 3 to Fetch Quantity of the Product using Product_ID: ')
+	print('Press 4 to Delete Product Details using Product_ID: ')
+	print('Press 5 to Update Product Price using Product_ID: ')
+	print('Press 6 to Update Product Quantity using Product_ID: ')
+	print('Press 0 to Exit: ')
+	print()
+
+	Answer = int(input('Press desired number: '))
+
+	if Answer == 1 :
+		n = int(input('Enter the number of entries to be entered: '))
+		for i in range(n):
+			Entry()
+
+	elif Answer == 2 :
+		Product_ID = input('Enter the Product ID: ')
+		Extract_Data(Product_ID)
+
+	elif Answer == 3 :
+		Product_ID = input('Enter the Product ID: ')
+		Extract_Quantity(Product_ID)
+
+	elif Answer == 4 :
+		Product_ID = input ('Enter the ID of the product to be deleted : ')
+		Delete_Record(Product_ID)
+	
+	elif Answer == 5 :
+		Product_ID = input('Enter the Product ID: ')
+		New_Price  = int(input('Enter the New Price of the Product: '))
+		Update_Price(Product_ID,New_Price)
+
+	elif Answer == 6 :
+		Product_ID = input('Enter the Product ID: ')
+		New_Quantity  = int(input('Enter the New Quantity of the Product: '))
+		Update_Quantity(Product_ID,New_Quantity)
+
+	elif Answer == 0 :
+		print('Thank You !!')
+		exit()
+
+	else:
+		print('No such option exists..!!')
+		exit()
+
+