A是给定的列表。该列表具有嵌套元组。我们的任务是对列表中的元素进行计数,直到一个元素成为元组为止。在这里我们使用isinstance()
函数。此函数有两个参数object和classinfo.object进行检查,并且classinfo是class,type或class and types的元组。如果对象是as类的实例或子类或元组的任何元素,则此函数返回true,否则返回false。
Input : A=[4, 5, 6, 10,22,33, (1, 2, 3), 11, 2, 4] Output : 6
Step 1: Given a list. Step 2: Use one counter variable c which is initialized by 0. Step 3: We traverse the list and verify that encountering a tuple or not in our path of count. Step 4: If it’s true then counter will be increased by 1 otherwise false. Step 5: return c
# Program to count the items # until a list is encountered a tuple def countelement(M): c = 0 print("RESULT ::>") for i in M: if isinstance(i, tuple): break c = c + 1 return c # Driver Code A = [4, 5, 6, 10,22,33, (1, 2, 3), 11, 2, 4] print(countelement(A))
输出结果
Result ::>6