带class的python程序是怎样执行的?
如
#!/usr/bin/python
import sgmllib,urllib
class MyParser(sgmllib.SGMLParser):
"A simple parser class."
def parse(self, s):
"Parse the given string 's'."
self.feed(s)
self.close()
def __init__(self, verbose=0):
"Initialise"
sgmllib.SGMLParser.__init__(self, verbose)
self.hyperlinks = []
self.images = []
self.title=''
self.inside_title=False
self.contents=[]
def start_title(self, attrs):
self.inside_title = True
def end_title(self):
self.inside_title = False
def handle_data(self, data):
if self.inside_title and data:
self.title = self.title + data + ' '
def start_a(self, attributes):
for name, value in attributes:
if name ==
>>> x=-1
>>> if x>0:
print ('11')
>>> else:
SyntaxError: invalid syntax (<pyshell#20>, line 1)
网上搜的也是：
>>> x=int(input("Please ent ......
