python - Why does this function return None, but when I type out what it does manually, it returns something different? -

here code:

dict = { "a":"1" }  def dict_find(x):     print dict.get('x')  dict_find('a') print dict.get('a')

the output dict_find('a') none, output manually writing out print dict.get('a') 1.

that because function not use variable x string 'x', not key of dict.

additionally, function has no return statement. function without return statement return none.

also, should not use dict variable name, since built-in type.

dic = {"a":"1"} def dict_find(x):     return dic.get(x)

UV code