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Andrew Matimba
10,255 PointsHi, I really need help on this challenge
Maybe i am not understanding what the question is asking! Let's practice using @classmethod!
Create a class method in Letter named from_string that takes a string like "dash-dot" and creates an instance with the correct pattern (['_', '.']). What exacly am i suppose to do here?
class Letter:
def __init__(self, pattern=None):
self.pattern = pattern
def __iter__(self):
yield from self.pattern
def __str__(self):
output = []
for blip in self:
if blip == '.':
output.append('dot')
else:
output.append('dash')
return '-'.join(output)
@classmethod
def from_string(cls, my_string):
pattern = my_string.split("-")
for element in pattern:
if element == "dash":
pattern.remove("dash")
pattern.append("_")
else:
pattern.remove("dot")
pattern.append(".")
return cls(pattern)
class S(Letter):
def __init__(self):
pattern = ['.', '.', '.']
super().__init__(pattern)
2 Answers
Ryan Gostic
20,790 PointsMutating (Changing) a list while iterating through it is not a good practice. Try creating a new list to add the new '.' and '-'.
ABDULSALAM JAM
Courses Plus Student 156 Pointsi really want you to focus in this
class S(Letter): def init(self): pattern = ['.', '.', '.'] # make sure you put the pattern value in its place super().init(pattern=pattern)