# lst = range(500)

# 22 us
def lstcomp_test(lst):
	return [x for x in lst]

# 65 us
def for_test(lst):
	out = []
	for x in lst:
		out.append(x)
	return out

# 77 us
def for_enum(lst):
	out = []
	for i,x in enumerate(lst):
		out.append(x)
	return out

# 87 us
def for_enum_lookup(lst):
	out = []
	for i,x in enumerate(lst):
		out.append(lst[i])
	return out

# 90 us
def for_ugly(lst):
	out = []
	for i in range(len(lst)):
		out.append(lst[i])
	return out

# 170 us
def while_test(lst):
	out = []
	i = 0
	while i < len(lst):
		out.append(lst[i])
		i+=1
	return out

# 740 us
def for_test_copy(lst):
	out = []
	for x in lst:
		out = out + [x]
	return out

# 810 us
def for_ugly_copy(lst):
	out = []
	for i in range(len(lst)):
		out = out + [lst[i]]
	return out