摘要：python: 1 a = 02 def f():3 a = 94 print a5 6 f()7 print a 打印出来是9和0 a = 0def f(): print af()print a 打印出来是0和0 python调用f函数，执行print a的时候，... 阅读全文

摘要：1 """A parser for SGML, using the derived class as a static DTD.""" 2 3 # XXX This only supports those SGML features used by HTML. 4 5 # XXX... 阅读全文