Challenge: Text Cache
Tarefa
Swipe to start coding
Implement the string_cache() function that returns the inner() function that takes the string value and adds it to the enclosed text.
- Create the
textvariable with the value""(empty string) in thestring_cache()function. - The
inner()function should take thestringargument with the default value"". - Make the
textnon-local variable changeable inside theinner()function. - If the
stringargument is not an empty string, add this string to thetextnon-local variable. After the first string addition, the addition should be with space. - The
inner()function should return thetextenclosed variable. - The
string_cache()should return theinner()function without calling. - Call the
string_cache()function and assign the result to thetext_cachevariable.
Solução
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def string_cache():
text = ""
def inner(string=""):
nonlocal text
if string != "" and isinstance(string, str):
if text != "":
text += " " + string
else:
text += string
return text
return inner
text_cache = string_cache()
print(text_cache())
print(text_cache("It's"))
print(text_cache("a"))
print(text_cache("text"))
print(text_cache("cache."))
print(text_cache())
Tudo estava claro?
Obrigado pelo seu feedback!
Seção 2. Capítulo 4
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def string_cache():
___ = ___
def inner(___=___):
___ text
if string != "" and isinstance(string, str):
if text != "":
text += " " + ___
else:
___ += string
return ___
return ___
text_cache = ___()
print(text_cache())
print(text_cache("It's"))
print(text_cache("a"))
print(text_cache("text"))
print(text_cache("cache."))
print(text_cache())
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