137 lines
4.0 KiB
Python
137 lines
4.0 KiB
Python
from math import log
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class Calculator():
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"""Calculator class for the Intermediate Python
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class led by Ed Fine from Pluralsight. This has
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basic calculator functions including keeping a running
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total.
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"""
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def __init__(self):
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self.total = 0.0
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self.actions = []
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def add(self, val1, val2=None):
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"""Add two numbers together and prints the result
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then adds the sum to the running total. With only
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one number provided, just add that to the running
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total.
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"""
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running_total = self.total
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if val2:
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total = val1 + val2
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print(total)
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self.actions.append(f"{val1} + {val2}")
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else:
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total = val1
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self.actions.append(f"{val1} + {running_total}")
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self.total += total
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self.actions.append(f" = {self.total}")
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def sub(self, val1, val2=None):
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"""Subtracts val2 from val1 and prints the result
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then subtracts the difference from the running total.
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With only one number provided, just subtract that to
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the running total.
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"""
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running_total = self.total
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if val2:
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total = val1 - val2
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print(total)
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self.actions.append(f"{val1} - {val2}")
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else:
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total = val1
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self.actions.append(f"{val1} - {running_total}")
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self.total -= total
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self.actions.append(f" = {self.total}")
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def mult(self, val1, val2=None):
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"""Multiplies the new values and prints the result
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then multiplies the product to the running total.
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With only one number provided, just mulitply the
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running total with the lone value.
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"""
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running_total = self.total
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if val2:
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total = val1 * val2
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print(total)
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self.actions.append(f"{val1} * {val2}")
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else:
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total = val1
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self.actions.append(f"{val1} * {running_total}")
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self.total *= total
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self.actions.append(f" = {self.total}")
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def div(self, val1, val2=None):
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"""Divides val1 by val2 and prints the result
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then divides the running total by the quotient.
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With only one number provided, the running total
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will be divided by the value.
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"""
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running_total = self.total
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if val2:
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total = val1 / val2
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print(total)
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self.actions.append(f"{val1} / {val2}")
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else:
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total = val1
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self.actions.append(f"{val1} / {running_total}")
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self.total /= total
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self.actions.append(f" = {self.total}")
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def pow(self, val1, val2=None):
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"""Raises val1 to the power of val2 and prints
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the result then raises the running total by the
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result. With only one number provided, just
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raise the running total by the lone value.
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"""
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running_total = self.total
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if val2:
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total = val1 ** val2
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print(total)
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self.actions.append(f"{val1} ** {val2}")
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else:
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total = val1
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self.actions.append(f"{val1} ** {running_total}")
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self.total = total ** self.total
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self.actions.append(f" = {self.total}")
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def log(self, val):
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"""Prints the logarithm of the value. This
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does not affect the running total.
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"""
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print(log(val))
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self.actions.append(f"log({val})")
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# self.total = log(val) ** self.total
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# self.actions.append(f" = {self.total}")
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def showcalc(self):
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"""Prints out the running history since the
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last all clear command.
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"""
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for action in self.actions:
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print(action)
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def total(self):
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"""Prints the running total."""
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return(self.total)
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def ac(self):
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"""Resets the running total to 0.0 and
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empties the history."""
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self.total = 0.0
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self.actions = []
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