摘要:问题表现 npm WARN read-shrinkwrap This version of npm is compatible with lockfileVersion@1, but package-lock.json was generated for lockfileVersion@2. I'l
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摘要:代码 x = [1,1,2,2,3,2,3,4,5,6] y = [1,2,3,4,5] z = x + y print(z) # z = x - y # 会报错,不支持""-"操作 # print(z) sx = set(x) # 可以转集合,但会去除重复元素 sy = set(y) print(
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