end=‘’

print('----------------')
a = ['aa','bb','cc','dd','ee']
for i in range(len(a)):
    print(i,a[i])#默认换行
print('分割-----')
for i in range(len(a)):
    print(i,a[i],end='')#不换行
print('分割-----')
for i in range(len(a)):
    print(i,a[i],end=' ')#不换行，空格隔开
print('分割-----')
for i in range(len(a)):
    print(i,a[i],end=',')#不换行，逗号隔开
print('分割-----')
for i in range(len(a)):
 print(i,a[i],end='>')#>隔开