CODEWITHSUNDEEP
python
Zun Jie
Zun Jie

Reputation: 45

Python Keyword Argument extra word

A very easy Python code. I wish to obtain the following:

>>> sandwich('wheat')
 'wheat bread sandwich with turkey'
>>> sandwich('white', meat='ham', cheese='American')
 'white bread sandwich with ham and American cheese'
>>> sandwich('white', cheese='American', meat='ham')
'white bread sandwich with ham and American cheese'
>>> sandwich('rye','ham','Swiss')
 'rye bread sandwich with ham and Swiss cheese'
>>> sandwich('white', cheese='provolone')
 'white bread sandwich with turkey and provolone cheese'

This is my code. I want to ignore any cheese in my first sentence. How do i do that?

>>> def sandwich(bread, meat='turkey', cheese=None):
>>>     print bread,"bread sandwich with",meat,"and",cheese,"cheese"


>>> sandwich('wheat')
>>> sandwich('white', meat='ham', cheese='American')
>>> sandwich('white', cheese='American', meat='ham')
>>> sandwich('rye','ham','Swiss')
>>> sandwich('white', cheese='provolone')

This is my code. I want to ignore any cheese in my first sentence. How do i do that?

Upvotes: 0

Views: 167

Answers (3)

Gravy
Gravy

Reputation: 178

Changing the default value from None to "" (empty string) should do the trick

Edit : Sorry late night and not thinking clearly. Split your print line into an if check. If you cheese is "" print line without the cheese bit and else print the line you have now.

Sorry for not providing code example, posting from my phone, shouldn't do that I suppose

Upvotes: 1

venpa
venpa

Reputation: 4318

Are you looking for this

def sandwich(bread, meat='turkey', cheese=None):
    if cheese:
        print bread,"bread sandwich with",meat,"and",cheese,"cheese"
    else:
        print bread,"bread sandwich with",meat

If cheese is not passed, it gets the default value None from function definition. Based on that, you can decide print sentence with cheese.

Upvotes: 0

aha
aha

Reputation: 4624

one easy way is:

def sandwich(bread, meat='turkey', cheese=None):
    print bread,"bread sandwich with",meat,      
    if cheese:
        print "and",cheese,"cheese"

Upvotes: 0

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