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# 循环
# Python的循环有两种,一种是for...in循环,一种是while循环
# for...in循环
print
(
'for...in循环'
)
print
(
'#1 依次把list或tuple中的每个元素迭代出来'
)
names
=
[
'Micheal'
,
'Bob'
,
'Tracy'
]
for
name
in
names:
print
(name)
print
(
'#2 计算1-10的整数之和'
)
s
=
0
for
x
in
[
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
,
10
]:
s
+
=
x
print
(s)
print
(
'#3 计算1-100的整数之和'
)
s
=
0
# range()生成序列是左闭右开区间,从0开始
# range(101)生成[0,1,2...100]
l
=
list
(
range
(
101
))
for
x
in
l:
s
+
=
x
print
(s)
print
(
'------------------------------'
)
# while循环
print
(
'while循环'
)
print
(
'计算100以内所有奇数之和'
)
s
=
0
n
=
99
while
n >
0
:
s
+
=
n
n
=
n
-
2
print
(s)
|
本文转自yeleven 51CTO博客,原文链接:http://blog.51cto.com/11317783/1952813