在文本分析和数据分析的其他各个领域中,通常需要查找给定列表是否已经是更大列表的一部分。在本文中,我们将看到实现此要求的python程序。
我们使用for循环来检查较小列表中的每个元素是否在较大列表中。all函数可确保每次评估返回true。
Alist = ['Mon','Tue', 5, 'Sat', 9] Asub_list = ['Tue',5,9] # Given list and sublist print("Given list ",Alist) print("Given sublist",Asub_list) # With all if (all(x in Alist for x in Asub_list)): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list") # Checkign again Asub_list = ['Wed',5,9] print("New sublist",Asub_list) if (all(x in Alist for x in Asub_list)): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list")
输出结果
运行上面的代码给我们以下结果-
Given list ['Mon', 'Tue', 5, 'Sat', 9] Given sublist ['Tue', 5, 9] Sublist is part of bigger list New sublist ['Wed', 5, 9] Sublist is not part of bigger list
在这种方法中,我们将列表转换为集合,并使用子集函数来验证小列表是否是大列表的一部分。
Alist = ['Mon','Tue', 5, 'Sat', 9] Asub_list = ['Tue',5,9] # Given list and sublist print("Given list ",Alist) print("Given sublist",Asub_list) # With all if(set(Asub_list).issubset(set(Alist))): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list") # Checkign again Asub_list = ['Wed',5,9] print("New sublist",Asub_list) if(set(Asub_list).issubset(set(Alist))): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list")
输出结果
运行上面的代码给我们以下结果-
Given list ['Mon', 'Tue', 5, 'Sat', 9] Given sublist ['Tue', 5, 9] Sublist is part of bigger list New sublist ['Wed', 5, 9] Sublist is not part of bigger list
相交函数可以找到两个集合之间的公共元素。在这种方法中,我们将列表转换为集合并应用交集函数。如果相交的结果与子列表相同,则我们得出子列表是该列表的一部分的结论。
Alist = ['Mon','Tue', 5, 'Sat', 9] Asub_list = ['Tue',5,9] # Given list and sublist print("Given list ",Alist) print("Given sublist",Asub_list) # With all if(set(Alist).intersection(Asub_list)== set(Asub_list)): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list") # Checkign again Asub_list = ['Wed',5,9] print("New sublist",Asub_list) if(set(Alist).intersection(Asub_list)== set(Asub_list)): print("Sublist is part of bigger list") else: print("Sublist is not part of bigger list")
输出结果
运行上面的代码给我们以下结果-
Given list ['Mon', 'Tue', 5, 'Sat', 9] Given sublist ['Tue', 5, 9] Sublist is part of bigger list New sublist ['Wed', 5, 9] Sublist is not part of bigger list