Introduction string into the dictionary, eval of

The string must have a clear characteristics, or python can not be divided, the idea is a character 
string into a first list, and then added to an empty list, and finally into the dictionary. 
get_webinfo DEF (): 
    str1 = [] 
    config = "A = b = cancellation login" 
    Result = config.split ( '') 
    for D in Result: 
        str1.append (d.split ( "=")) 
    Print (dict ( str1)) 

eval () function is very powerful, you can directly run the code of conduct python execution, 
such as print (eval ( "1 + 2 ")) can get results 3, 
can also be passed variable print (eval ( "{ 'name': 'linux ', 'age': age}", { "age": 1822})) 
output: { 'name': 'linux
 ', 'age': 1822} If the string you directly in the form of a dictionary 
DEF get_dict (): 
    config = "{ 'a': 'login', 'b': 'Logout'}" 
Print (the eval (config))