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Start your free trialEldin Guzin
6,010 Pointsconstruction zone help
I do not know what did I did wrong it says that i didn't get the right pattern, can someone give me some hints of what am I doing wrong ? Thanks for your help !
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, strings):
regular_pattern = []
strings = strings.split("-")
for dash_dot in strings:
if dash_dot == ".":
regular_pattern.append("dot")
elif dash_dot == "-":
regular_pattern.append("dash")
return cls(regular_pattern)
class S(Letter):
def __init__(self):
pattern = ['.', '.', '.']
super().__init__(pattern)
3 Answers
Steven Parker
231,109 PointsThis method is intended to look for "dot" and "dash" tokens in a string and convert them into a pattern made of period (".") and underscore ("_") elements.
But right now, its doing the opposite — looking for pattern elements and converting them to the words.
Eldin Guzin
6,010 PointsThis is becoming frustrating, I am really sorry for bothering you Steven but I dont get why is it holding me back on these simple mistakes, btw you are awesome,stay safe in these difficult time wherever you may be !!!
@classmethod def from_string(cls, strings): dash_dot_pattern = [] strings = strings.split("-") if strings == "dot": dash_dot_pattern.append(".") elif strings == "dash": dash_dot_pattern.append("_") return cls(dash_dot_pattern)
Steven Parker
231,109 PointsWithout Markdown formatting, code is hard to read and some issues (like indentation errors) cannot be seen at all.
But it looks like this code is missing the loop needed to step through the code elements (and was there before).
Eldin Guzin
6,010 PointsOh sorry, it's the same code as the above one but I changed the hyphen into a underscore, still says it gives the wrong result....
Steven Parker
231,109 PointsThe previous code works with the underscore. But if you still have trouble, repost the code again with formatting.
Eldin Guzin
6,010 PointsEldin Guzin
6,010 PointsIt still says that it doesn't get the right pattern...
class Letter: def init(self, pattern=None): self.pattern = pattern
class S(Letter): def init(self): pattern = ['.', '.', '.'] super().init(pattern)
Steven Parker
231,109 PointsSteven Parker
231,109 PointsAlmost! But instead of a hyphen, a "dash" should be converted into an underscore.