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如何配對python list的多個元素消除重復?

壹次從列表中取出兩個元素,如果第二個元素不在輸出列表中,則將它們添加到輸出列表中。

source = ["a "," 1 "," b "," 1 "," c "," 2 "," d "," 3 "," e "," 4 "," c "," 3"]

out = []

對於zip中的e(source[0::2],source[1::2]):

....如果e[1]不是in out:

........out = out + list(e)

打印(輸出)