CODEWITHSUNDEEP
pythonpython-3.x
Griffin Filmz
Griffin Filmz

Reputation: 101

How to turn input number into a percentage in python

print ("How much does your meal cost")

meal = 0
tip = 0
tax = 0.0675

action = input( "Type amount of meal ")

if action.isdigit():
    meal = (action)
    print (meal)

tips = input(" type the perentage of tip you want to give ")


if tips.isdigit():
    tip = tips 
    print(tip)

I have written this but I do not know how to get 

print(tip)

to be a percentage when someone types a number in.

Upvotes: 6

Views: 53792

Answers (4)

jfs
jfs

Reputation: 414395

>>> "{:.1%}".format(0.88)
'88.0%'

Upvotes: 22

Phil Cote
Phil Cote

Reputation: 417

We're assuming that it's a number the user is putting in. We want to make sure that the number is a valid percentage that the program can work with. I would recommend anticipating both expressions of a percentage from the user. So the user might type in .155 or 15.5 to represent 15.5%. A run-of-the-mill if statement is one way to see to that. (assuming you've already converted to float)

if tip > 1:
    tip = tip / 100

Alternatively, you could use what's called a ternary expression to handle this case. In your case, it would look something like this:

tip = (tip / 100) if tip > 1 else tip

There's another question here you could check out to find out more about ternary syntax.

Upvotes: 1

Corrupted MyStack
Corrupted MyStack

Reputation: 451

It will be 

print "Tip = %.2f%%" % (100*float(tip)/meal)

The end %% prints the percent sign. The number (100*float(tip)/meal) is what you are looking for.

Upvotes: 2

merlin2011
merlin2011

Reputation: 75575

Based on your usage of input() rather than raw_input(), I assume you are using python3.

You just need to convert the user input into a floating point number, and divide by 100.

print ("How much does your meal cost")

meal = 0
tip = 0
tax = 0.0675

action = input( "Type amount of meal ")

if action.isdigit():
    meal = float(action)

tips = input(" type the perentage of tip you want to give ")

if tips.isdigit():
    tip = float(tips)  / 100 * meal
    print(tip)

Upvotes: 2

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