python入门之语句，包括if语句、while语句、for语句，供python初学者参考。
//if语句例子
name = ‘peirong’;
if name == ‘peirong’:
print ‘this is peirong’;
elif name== ‘maojun’:
print ‘this is maojun’;
else:
print ‘others’;
//while语句
i = 0;
a = range(10);
while i < a.__len__():
print i;
i = i+1;
//for语句
a = range(1,10);
for i in a:
print i;
else:
print 'the for loop is over!'
//continue 语句
a = range(1000)
for i in a:
if i % 3 == 0:
print 'chuyi 3 yu 0 ';
elif i % 3 == 1:
print 'chuyi 3 yu 1 ';
else:
continue