ls =[12,44,23,46] for i in ls:

        If i=='44’:

             print (' found it!i=',i)

                 break

else:

  print (' not found it...')

x=[1, 2,3]

y=[4,5,6]

z= [7,8,9]

xyz = zip(x, y, z)

print(xyz)

print函数输出的结果是

  txt = open(“hanlet.txt","r").read()

txt = txt.lover()

for ch in ’!"#$%&()*+,--/:;<=>?@[\\]^_{|}~’ :

             txt = txt.replace(ch,““)

txt的类型为