A difference between--pycharm and Python idle printing when keys are duplicated in a dictionary

The same key is not allowed to appear two times in Python. When created, if the same key is assigned a value of two times, the latter value is remembered, as in the following example:

 Dict1 = { " name   ": "  runoob  , "  age   ": 7, "  name   ": "   Young rookie   " }   Print  ( " dict1[' Name ']:   ", Dict1["  name  " Span style= "COLOR: #800000" > "]) 

If it is pycharm (Community edition v3.4.4), then Pycharm will have a hint: Dictionary contains duplicate keys ' Name ' more ...

Actually no print:

If Python comes with idle, the last value of the same key will be printed

A difference between--pycharm and Python idle printing when keys are duplicated in a dictionary