[python] How do I fix this "TypeError: 'str' object is not callable" error?

I'm creating a basic program that will use a GUI to get a price of an item, then take 10% off of the price if the initial price is less than 10, or take 20% off of the price if the initial price is greater than ten:

import easygui
price=easygui.enterbox("What is the price of the item?")
if float(price) < 10:
    easygui.msgbox("Your new price is: $"(float(price) * 0.1))
elif float(price) > 10:
    easygui.msgbox("Your new price is: $"(float(price) * 0.2))

I keep getting this error though:

easygui.msgbox("Your new price is: $"(float(price) * 0.1))
TypeError: 'str' object is not callable`

Why am I getting this error?

This question is related to python string user-interface comparison callable

The answer is

this part :

"Your new price is: $"(float(price)

asks python to call this string:

"Your new price is: $"

just like you would a function: function( some_args) which will ALWAYS trigger the error:

TypeError: 'str' object is not callable

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