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full calculator (3.0).py
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full calculator (3.0).py
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# starting variables
import math
instruction_list_unprocessed = []
instruction_list = []
# user interface
print("this is a calculator that can perform many common mathematical functions")
print("your input must be a single string of text with no spaces")
print("possible operations: +, -, *, /, //, %, **, sqrt")
# inputs and initial processing
equation = input("please enter equation...")
total_length = len(equation)
# moving each character of the equation to a separate variable in a list (instruction_list_unprocessed)
for i in range(total_length):
instruction_list_unprocessed.append(equation[i])
instruction_list_unprocessed.append("x")
# consolidating multi digit numbers
for i in range(total_length):
if str(instruction_list_unprocessed[i]).isnumeric():
if str(instruction_list_unprocessed[i + 1]).isnumeric():
instruction_list_unprocessed[i + 1] = instruction_list_unprocessed[i] + instruction_list_unprocessed[i + 1]
instruction_list_unprocessed[i] = "empty"
# consolidating muliti character operators
for i in range(total_length):
if str(instruction_list_unprocessed[i]).isnumeric():
b = 0
else:
if instruction_list_unprocessed[i] == instruction_list_unprocessed[i + 1]:
instruction_list_unprocessed[i + 1] = instruction_list_unprocessed[i] + instruction_list_unprocessed[i + 1]
instruction_list_unprocessed[i] = "empty"
# consolidating sqrt command
for i in range(total_length):
if str(instruction_list_unprocessed[i]).isalpha():
if str(instruction_list_unprocessed[i]) == "s":
instruction_list.append("sqrt")
else: instruction_list.append(instruction_list_unprocessed[i])
# inputs are processed here before calculation
length = len(instruction_list)
operation_count = 0
# sqrt module
sqrt_count = instruction_list.count("sqrt")
for i in range(sqrt_count):
x = instruction_list.index("sqrt")
instruction_list[x] = math.sqrt(int(instruction_list[x + 1]))
instruction_list.pop(x + 1)
operation_count = operation_count + 2
# indices module
power_count = instruction_list.count("**")
for i in range(power_count):
x = instruction_list.index("**")
instruction_list[x] = int(instruction_list[x - 1]) ** int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# multiplication module
multiplication_count = instruction_list.count("*")
for i in range(multiplication_count):
x = instruction_list.index("*")
instruction_list[x] = int(instruction_list[x - 1]) * int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# remainder division module
remainder_div_count = instruction_list.count("%")
for i in range(remainder_div_count):
x = instruction_list.index("%")
instruction_list[x] = int(instruction_list[x - 1]) % int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# integer division module
int_div_count = instruction_list.count("//")
for i in range(int_div_count):
x = instruction_list.index("//")
instruction_list[x] = int(instruction_list[x - 1]) // int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# division module
division_count = instruction_list.count("/")
for i in range(division_count):
x = instruction_list.index("/")
instruction_list[x] = int(instruction_list[x - 1]) / int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# addition module
addition_count = instruction_list.count("+")
for i in range(addition_count):
x = instruction_list.index("+")
instruction_list[x] = int(instruction_list[x - 1]) + int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
# subtraction module
subtraction_count = instruction_list.count("-")
for i in range(subtraction_count):
x = instruction_list.index("-")
instruction_list[x] = int(instruction_list[x - 1]) - int(instruction_list[x + 1])
instruction_list.pop(x + 1)
instruction_list.pop(x - 1)
operation_count = operation_count + 2
answer = instruction_list[i]
print("your answer is:", answer)