相关疑难解决方法(0)

一位朋友上周问我如何枚举或列出程序/函数/等中的所有变量.出于调试的目的(基本上获取所有内容的快照,以便您可以查看设置了哪些变量,或者是否设置了它们).我环顾四周,找到了一个比较好的Python方法:

#!/usr/bin/python                                                                                                                                                                                                                           
foo1 = "Hello world"
foo2 = "bar"
foo3 = {"1":"a",
        "2":"b"}
foo4 = "1+1"

for name in dir():
    myvalue = eval(name)
    print name, "is", type(name), "and is equal to ", myvalue

这将输出如下内容:

__builtins__ is <type 'str'> and is equal to  <module '__builtin__' (built-in)>
__doc__ is <type 'str'> and is equal to  None
__file__ is <type 'str'> and is equal to  ./foo.py
__name__ is <type 'str'> and is equal to  __main__
foo1 is <type 'str'> and is equal to …