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import timeit | |
def sample_code(): | |
lst, v = [1, 5, 3, 4, 5, 6, 7, 5, 5, 10], 5 | |
remove_equal(lst, v) | |
print(lst, v) # [1, 3, 4, 6, 7, 10] 5 | |
def remove_equal_listcomprehension(lst: list, v): | |
new_lst = [e for e in lst if e != v] | |
lst.clear() | |
lst.extend(new_lst) | |
del new_lst | |
def remove_equal_for(lst, v): | |
for i, e in reversed(list(enumerate(lst))): | |
if e == v: | |
del lst[i] | |
def remove_equal_while(lst, v): | |
new_lst = [] | |
pop = lst.pop | |
append = new_lst.append | |
while True: | |
try: | |
e = pop() | |
except IndexError: | |
break | |
if e == v: | |
del e | |
else: | |
append(e) | |
new_lst.reverse() | |
lst.extend(new_lst) | |
del new_lst | |
def remove_equal_filter(lst, v): | |
new_lst = list(filter(lambda x: x != v, lst)) | |
lst.clear() | |
lst.extend(new_lst) | |
del new_lst | |
# remove_equal = remove_equal_listcomprehension | |
# remove_equal = remove_equal_for | |
# remove_equal = remove_equal_while | |
remove_equal = remove_equal_filter | |
if __name__ == '__main__': | |
sample_code() | |
print(timeit.timeit( | |
"remove_equal_listcomprehension([1, 2, 3, 4, 5, 6, 7, 8, 9 ,10], 5)", | |
"from remove_equal import remove_equal_listcomprehension", | |
number=1000000)) | |
print(timeit.timeit( | |
"remove_equal_for([1, 2, 3, 4, 5, 6, 7, 8, 9 ,10], 5)", | |
"from remove_equal import remove_equal_for", | |
number=1000000)) | |
print(timeit.timeit( | |
"remove_equal_while([1, 2, 3, 4, 5, 6, 7, 8, 9 ,10], 5)", | |
"from remove_equal import remove_equal_while", | |
number=1000000)) | |
print(timeit.timeit( | |
"remove_equal_filter([1, 2, 3, 4, 5, 6, 7, 8, 9 ,10], 5)", | |
"from remove_equal import remove_equal_filter", | |
number=1000000)) |
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