摘要：
1.上菜之前来个练手DOM <!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width initial-scale=1.0"> 阅读全文
摘要：
1.列表去重并且保持原来的顺序 """ 有一个列表[11, 2, 3, 3, 7, 9, 11, 2, 3],去重并且保持原来的顺序. """ numbers = [11, 2, 3, 3, 7, 9, 11, 2, 3] ret = list(set(numbers)) print(ret) re 阅读全文