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Python Python Basics (2015) Python Data Types Use .split() and .join()

Posted by taylor bostic
taylor bostic
589 Points

what is wrong with is code?

available = "banana split;hot fudge;cherry;malted;black and white" sundaes = available.split(";") menu = "Our available flavors are: {}." display_menu = sundaes.join(",") "Our avaialable flavors: {}.".format("display_menu")

banana.py 
available = "banana split;hot fudge;cherry;malted;black and white"
sundaes = available.split(";")
menu = "Our available flavors are: {}."
display_menu = sundaes.join(",")
"Our avaialable flavors: {}.".format("display_menu")
taylor bostic
taylor bostic
589 Points

keeps saying Oops! It looks like Task 1 is no longer passing.

1 Answer

Krishna Pratap Chouhan
Krishna Pratap Chouhan
15,203 Points
Krishna Pratap Chouhan
Krishna Pratap Chouhan
15,203 Points

It is important to remember that "list" object has no attribute or function called 'join'. Join works on strings.

Output of "join" is a string.

what join does is, it takes an argument and insert a string between its each first-level iterative entity. Lets see some example to make sense of it.

list1 = ['a', 'b', 'c']
list2= ["xxxx", "yyy", "zz", "a"]
string1 = "TYU"
string2 = "123"
#now lets see join coming into picture

list1.join(string1)
#It will give error
string1.join(list1)
#it will work fine and the output will be: aTYUbTYUcTYUd

#can you guess the output of:
string1.join(string2)
#the output will be: 1TYU2TYU3

#But since string is also iterable(as seen in string1.join()string2 ) so what you think is the output of
string2.join(list2);
#run it in a workspace and you will see the meaning "first-level iterative entity" in last sentence
#the output will be: xxxx123yyy123zz123a and NOT x123x123x123x123y123y123y123z123z123a

so there was the one mistake you were doing. Second is,

.format(display_menu)
#its should not be in ""

so finally

available = "banana split;hot fudge;cherry;malted;black and white"

sundaes = available.split(';')

menu = "Our available flavors are: {}."

display_menu = ", ".join(sundaes)

menu = menu.format(display_menu)

Hope this helped.

Dean Meyer
Dean Meyer
1,378 Points

Great explanation! Thank you very much!