Ignoring exception in command buy - discord.py

Question

An error pops up when I do the buy command. This code comes from The coding academy discord server but they didn't seem to know how to help. This is for a currency bot. Here is my code followed by the error:
`mainshop = [{"name":"Knife","price":65,"description":"Mug people! Unlocks `mug`"},
{"name":"Laptop","price":5000,"description":"Post some sweet memes on reddit! Unlocks `postmemes`"},
{"name":"Gun","price":10000,"description":"Rob people and businesses! Unlocks `rob` and `mug`"}]
#client.command()
async def shop(ctx):
em = discord.Embed(title = "Shop")
for item in mainshop:
name = item["name"]
price = item["price"]
desc = item["description"]
em.add_field(name = name, value = f"${price} | {desc}")
await ctx.send(embed = em)
#client.command()
async def buy(ctx,item,amount = 1):
await open_account(ctx.author)
res = await buy_this(ctx.author,item,amount)
if not res[0]:
if res[1]==1:
await ctx.send("That Object isn't there!")
return
if res[1]==2:
await ctx.send(f"You don't have enough money in your wallet to buy {amount} {item}")
return
await ctx.send(f"You just bought {amount} {item}")
#client.command()
async def inventory(ctx):
await open_account(ctx.author)
user = ctx.author
users = await get_bank_data()
try:
bag = users[str(user.id)]["bag"]
except:
bag = []
em = discord.Embed(title = "Inventory")
for item in bag:
name = item["item"]
amount = item["amount"]
em.add_field(name = name, value = amount)
await ctx.send(embed = em)
async def buy_this(user,item_name,amount):
item_name = item_name.lower()
name_ = None
for item in mainshop:
name = item["name"].lower()
if name == item_name:
name_ = name
price = item["price"]
break
if name_ == None:
return [False,1]
cost = price*amount
users = await get_bank_data()
bal = await update_bank(user)
if bal[0]<cost:
return [False,2]
try:
index = 0
t = None
for thing in users[str(user.id)]["bag"]:
n = thing["item"]
if n == item_name:
old_amt = thing["amount"]
new_amt = old_amt + amount
users[str(user.id)]["bag"][index]["amount"] = new_amt
t = 1
break
index+=1
if t == None:
obj = {"item":item_name , "amount" : amount}
users[str(user.id)]["bag"].append(obj)
except:
obj = {"item":item_name , "amount" : amount}
users[str(user.id)]["bag"] = [obj]
with open("mainbank.json","w") as f:
json.dump(users,f)
await update_bank(user,cost*-1,"wallet")
return [True,"Worked"]
Error:
Ignoring exception in command buy: Traceback (most recent call last): File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 85, in wrapped
ret = await coro(*args, **kwargs) File "main.py", line 50, in buy
res = await buy_this(ctx.author,item,amount) File "main.py", line 104, in buy_this
if bal[0]<cost: TypeError: 'bool' object is not subscriptable
The above exception was the direct cause of the following exception:
Traceback (most recent call last): File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/bot.py", line 902, in invoke
await ctx.command.invoke(ctx) File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 864, in invoke
await injected(*ctx.args, **ctx.kwargs) File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 94, in wrapped
raise CommandInvokeError(exc) from exc discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: 'bool' object is not subscriptable

Answer 1

As much as I see your value of the variable bal is somehow a bool value due to which if you try to take out values from it as a list, it gives you the following error.
You should try checking the definition of the update_bank() command and check it's return type.
Check this website for more info on the error : https://www.tutorialexample.com/fix-typeerror-bool-object-is-not-subscriptable-in-python-python-tutorial/