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This tag is for questions about calculators.
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A prefix notation calculator that asks about everything step by step
I made a prefix notation calculator.
Prefix notation, aka Polish notation, is a form of notation for logic, arithmetic and algebra, like infix and postfix (reverse Polish) notation. … The calculator asks for one value per step, and asks about everything step by step.
"""
Pfxcalc
Programmed by zyabin101
This code is hereby released into the public domain
"""
import ast
def lit_input …