list1 = ['a', 'b', 'c', 'd']
print(list1)
print(id(list1))
print(type(list1))
print(dir(list1))
print(list1[0:1])
print(list1[-1::-1])
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list1 = ['a', 'b', 'c', 'd']
print(list1)
print(id(list1))
print(type(list1))
print(dir(list1))
print(list1[0:1])
print(list1[-1::-1])
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