Coding for Economist Minds - Week 1

compound_interest_calculator.py

#-------------------------------------------------------------------
# This is a compound interest calculator, along with some challenge
# Written by Leon Wee, March 2018.
# Anyone may freely copy or modify this program.
#-------------------------------------------------------------------

# C = P[(1+r)^n - 1]
# Where:
# C = the compound interest
# P = the principal investment amount (the initial deposit or loan amount)
# r = the annual interest rate (in decimal instead of percentage)
# n = the number of years

def calculateCompountInterest(P, r, n): # create a function that accepts three input which are P, r and n
	C = P*((1+r)**n - 1)
	return C #gives C as output
	
def calculateBalance(C, P): # simple addition function that accept C and P
  B = P + C 
  return B # gives B as output

##this is the challenge data that I gave, your tasks is to calculate the balance of all this data
inputs = [
    {
        "P": 2750,
        "n": 7,
        "r": 0.025
    },
    {
        "P": 1980,
        "n": 6,
        "r": 0.034
    },
    {
        "P": 4637,
        "n": 3,
        "r": 0.04
    },
    {
        "P": 100,
        "n": 100,
        "r": 0.034
    },
    {
        "P": 1257,
        "n": 6,
        "r": 0.048
    },
    {
        "P": 6745,
        "n": 7,
        "r": 0.012
    }
]

for input in inputs:
  print(calculateBalance(calculateCompountInterest(input["P"], input["r"], input["n"]), input["P"]))

flow_control_(for_loop).py

#----------------------------------------------------------
# This demo program shows the use of for loop statements
# Written by Leon Wee, March 2018.
# Anyone may freely copy or modify this program.
#----------------------------------------------------------

for x in range(10): # print the message for 10 times, by counting from 0,1,2,3,....,8,9
	print("I love programming!")

for x in range(10):
	if x%2 == 0: # check if the remainder of x divided by 2 is 0, if yes, that means it is indeed an even number
		print(str(x) + " is an even number!")
	else: # so logically speaking, if x is not even, then it is odd!
		print(str(x) + " is an odd number!")

flow_control_(if_else).py

#---------------------------------------------------
# This demo program shows the use of IF statements
# Written by Leon Wee, March 2018.
# Anyone may freely copy or modify this program.
#---------------------------------------------------

weight = eval(input("Please enter your weight:\n")) # accept some input from user

if weight >= 100: # check if the weight is larger than 80
	print("Time to get some exercise bruh! >_<")
elif weight >= 50:
	print("Great, keep it up! ^_^")
else: # if the weight is less than 50, this part get executed!
	print("You probably need to eat more! ._.")

hello_world.py

#---------------------------------------------------
# This demo program shows off how elegant Python is!
# Written by Leon Wee, March 2018.
# Anyone may freely copy or modify this program.
#---------------------------------------------------

print("Hello, World!")     # This is easy!