如何从打印输出中删除括号和逗号

Question

Edit: Apparently I was using python 2. Switching to 3 fixed the issue and now I am getting the proper results without the parentheses/commas. Thanks for the replies - problem solved :D

Beginner at Python and coding in general. Struggling with my first project assignment, but I've gotten so close on my own.

My assignment is to create a code in python that counts the number of coins from a given value ie quarters, nickels, dimes, pennies.

My initial code looks like this:

coins=input('Enter amount of change: ')
print("Quarters", coins//25)
coins = coins%25
print("Dimes", coins//10)
coins = coins%10
print("Nickles", coins//5)
coins = coins%5
print('Pennies', coins//1)

Which prompts something like, "Enter amount of change: 86"
('Quarters', 3)
('Dimes', 1)
('Nickles', 0)
('Pennies', 1)

These are the correct values, but my instructor wants it to look like this:

Enter amount of change: 86
Quarters: 3
Dimes: 1
Nickles" 0
Pennies: 1

I can get the colon in there, but how can I remove the parentheses and commas? Thanks

Answer 1

You can use str.format() to produce the required output. For example for quarters:

print('Quarters: {}'.format(coins//25))

This will work in both versions of Python.

Answer 2

The simplest solution I've always used to print values in Python 2, which is the Python version you appear to be using, is the following:

coins=int(input('Enter amount of change: '))
print "Quarters: %i" % (coins//25)
coins = coins%25
print "Dimes: %i" % (coins//10)
coins = coins%10
print "Nickles: %i" % (coins//5)
coins = coins%5
print 'Pennies: %i' % (coins//1)

The % symbol, when used with strings, allows whatever value you want to be printed to be substituted in the string. To substitute multiple values, you separate them with commas. For example:

someInt = 1
someStr = 'print me!'
print "The values are %i and %s" % (someInt, someStr)

This code will substitute in someInt and someStr for %i (used for integers) and %s (used for strings), respectively.

However, the % symbol also functions as the modulus operator, so it does 2 different things when it is being used with strings and when it is being used among two numbers.

Answer 3

Please check :

coins=input('Enter amount of change: ')
print "Quarters:",coins//25
coins = coins%25
print "Dimes:",coins//10
coins = coins%10
print "Nickles:",coins//5
coins = coins%5
print "Pennies:",coins//1

Answer 4

It seems like you are using Python 2. I think you intended to use Python 3 given your use of input() and print() methods, but the code will work in Python 2 by changing print() methods to print keywords . Your code would look like the following in "proper"* Python 2:

coins = input('Enter amount of change: ')
print 'Quarters: ' + str(coins // 25)
coins = coins % 25
print 'Dimes: ' + str(coins // 10)
coins = coins % 10
print 'Nickles: ' + str(coins // 5)
coins = coins % 5
print 'Pennies: ' + str(coins)

Hope this helped!

Footnote: Using % is preferred over using string concatenation, but I still believe that it is easier to read for beginners this way.

Answer 5

To use the print() syntax on python2 add this to the top of your program:

from __future__ import print_function

otherwise python will interpret the argument to print as a tuple and you'll see ().

Answer 6

I am using Python 3 and the following lines exactly give what your instructor wants:

coins=float(input("Enter amount of change: "))
print("Quarters:", round(coins//25))
coins = coins%25
print("Dimes:", round(coins//10))
coins = coins%10
print("Nickels:", round(coins//5))
coins = coins%5
print("Pennies: %.0f" % coins)