python 元组查找元素返回索引

#create a tuple
tuplex = tuple("index tuple")
print(tuplex)
#get index of the first item whose value is passed as parameter
index = tuplex.index("p")
print(index)
#define the index from which you want to search
index = tuplex.index("p", )
print(index)
#define the segment of the tuple to be searched
index = tuplex.index("e", , )
print(index)
#if item not exists in the tuple return ValueError Exception
index = tuplex.index("y")