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Add Input Validation for Amount #12

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Add Input Validation for Amount #12

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26 changes: 16 additions & 10 deletions Shopping-list.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,17 +17,23 @@ def display_list():
def add_item():
global entry_item, entry_amount
item = entry_item.get()
amount = entry_amount.get()
amount = entry_amount.get().strip()
if item and amount:
amount = int(amount)
if item in shopping_list:
shopping_list[item] += amount
else:
shopping_list[item] = amount
entry_item.delete(0, tk.END)
entry_amount.delete(0, tk.END)
display_list()
messagebox.showinfo("Success", str(amount) + " " + item + "(s) have been added to your shopping list.")
try:
amount = int(amount)
if amount <= 0:
raise ValueError("Amount must be a positive integer.")

if item in shopping_list:
shopping_list[item] += amount
else:
shopping_list[item] = amount
entry_item.delete(0, tk.END)
entry_amount.delete(0, tk.END)
display_list()
messagebox.showinfo("Success", str(amount) + " " + item + "(s) have been added to your shopping list.")
except ValueError as e:
messagebox.showerror("Error", f"Invalid amount: {str(e)}")
else:
messagebox.showerror("Error", "Please enter both item and amount.")

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