CODEWITHSUNDEEP
pythonpython-2.7
Ernst
Ernst

Reputation: 83

Outputting floating numbers

I'm just starting to learn Python (2.7) and I have a question.

First my code:

def add(a, b):
    print "ADDING %d + %d" % (a, b)
    return a + b

number_a = float(raw_input())
number_b = float(raw_input())

add(number_a, number_b)

As you can see I want to ask the user to give me 2 floating numbers and then add them and print the solution. But when I put in 2 floating numbers, they are still printed as rounded numbers. How do I get this right?

Upvotes: 0

Views: 104

Answers (5)

pztrick
pztrick

Reputation: 3831

Use %f for floats. You can adjust decimal precision using %.2f for 2 digits or %.3f for three digits, etc.

def add(a, b):
    print "ADDING %.2f + %.2f" % (a, b)
    return a + b

number_a = float(raw_input())
number_b = float(raw_input())

add(number_a, number_b)

Upvotes: 2

jamylak
jamylak

Reputation: 133724

def add(a, b):
    print "ADDING {0} + {1}".format(a, b)
    return a + b

>>> add(1, 2)
ADDING 1 + 2
3
>>> add(1.5, 3)
ADDING 1.5 + 3
4.5

Upvotes: 0

piokuc
piokuc

Reputation: 26204

You have to use formatting sequence for floats, not integers, so this:

print "ADDING %d + %d" % (a, b)

should be:

print "ADDING %f + %f" % (a, b)

Upvotes: 0

Stefano Sanfilippo
Stefano Sanfilippo

Reputation: 33116

Use float format string %f instead of integer %d.

Upvotes: 0

Eric
Eric

Reputation: 97671

%d formats a decimal integer. %f formats a float:

def add(a, b):
    print "ADDING %f + %f" % (a, b)
    return a + b

Upvotes: 2

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