python语句 角色 例子
赋值 创建引用值 a,b,c='good','bad','apple'
调用 执行函数 log.write("spam,ham ")
print 打印对象 print "hello world"
if/elif/else 选择 if "python" in text
print text
for/else 序列迭代 for x in mylist
print x
while/else 一般循环 while x>y
print ”x“
pass 空占位符 while Ture
pass
break,continue 循环跳跃 while True
if not line: break
try/except/finally 捕捉异常 try:
action()
except:
print 'action error'
raise 触发异常 raise endSearch,location
import,from 模块读取