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[utils] Fix error when copying LazyList

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This commit is contained in:
pukkandan
2021-11-20 08:05:57 +05:30
parent c07a39ae8e
commit 282f570918
3 changed files with 21 additions and 13 deletions
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20
yt_dlp/utils.py
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@ -4086,10 +4086,10 @@ class LazyList(collections.abc.Sequence):
class IndexError(IndexError):
pass
def __init__(self, iterable):
def __init__(self, iterable, *, reverse=False, _cache=None):
self.__iterable = iter(iterable)
self.__cache = []
self.__reversed = False
self.__cache = [] if _cache is None else _cache
self.__reversed = reverse
def __iter__(self):
if self.__reversed:
@ -4155,9 +4155,17 @@ class LazyList(collections.abc.Sequence):
self.__exhaust()
return len(self.__cache)
def reverse(self):
self.__reversed = not self.__reversed
return self
def __reversed__(self):
return type(self)(self.__iterable, reverse=not self.__reversed, _cache=self.__cache)
def __copy__(self):
return type(self)(self.__iterable, reverse=self.__reversed, _cache=self.__cache)
def __deepcopy__(self, memo):
# FIXME: This is actually just a shallow copy
id_ = id(self)
memo[id_] = self.__copy__()
return memo[id_]
def __repr__(self):
# repr and str should mimic a list. So we exhaust the iterable