python学习篇第一天

环境：下载安装了python3 ，然后Linux上自带的python2.6.6

作业代码：

""" ....."""为注释符

"""
输入1到11然后跳过7
n = 1
while n < 11:
	if n == 7:
		pass
	else:
		print(n)
	n = n + 1
print('end')
"""
"""
输入1到100的和
n = 1
s = 0
while n < 101:
    s = s + n
    n = n + 1
print(s)
"""
"""
输出1到100的偶数
n = 1
while n < 101:
    s = n % 2
    if s == 0:
        print(n)
    else:
        pass
    n = n + 1
print ('end')
"""
"""
输入1到100的奇数
n = 1
while n < 101:
    s = n % 2
    if s != 0:
        print (n)
    else:
        pass
    n = n + 1
print ('end')
"""
"""
求1-2+3-4+5..99的和
n = 1
s = 0
while n < 100:
    if n % 2 == 0:
        s = s - n 
    else :
        s = s + n 
    n = n + 1
print (s)
"""