Python 3: replacing elements that passes equality checks and calls another function to validate -


firstly, very new python. understand basics of loops used iterate through list, however, trying replace element passes basic equality check, case== " ". when iteration reaches " ", should replace blank spot letter "a" , return true.

however, not case, returns false :( if find time point basic way this, appreciated. have searched, of answers include such things enumerate , len functions etc, above understanding far. thank assistance offered.

# list iterate through. mylist = ["a", "a", " ", "b", "b", "c", " ", "a", "b"]  # function check conditionals def checkbook(spots,grade):     if spots[0] == grade , spots[1] == grade , spots[2] == grade:         return true     else:         return false   # function iterate through mylist, calls checkbook  # function return def compareelements():     elements in mylist:         if elements == " ":             elements = "a"             print (checkbook(mylist, "a"))  compareelements()

the error here:

for elements in mylist:     if elements == " ":         elements = "a"

in case, assigning "a" variable elements, , not modifying original mylist.

in code below, mylist[i] = "a" modify mylist, i index of element, enumerate return index , item iterate through. (changed variable name elements element prevent confusion)

# list iterate through. mylist = ["a", "a", " ", "b", "b", "c", " ", "a", "b"]  # function check conditionals def checkbook(spots,grade):     # if spots[0] == grade , spots[1] == grade , spots[2] == grade:     if spots[0] == spots[1] == spots[2] == grade: # can simplified         return true     else:         return false   # function iterate through mylist, calls checkbook  # function return def compareelements():     i,element in enumerate(mylist): # index, item         if element == " ":              mylist[i] = "a" # modifies mylist             print (checkbook(mylist, "a"))  compareelements() # prints true, true print(mylist) # ['a', 'a', 'a', 'b', 'b', 'c', 'a', 'a', 'b']

hope helps :)


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