hi all, I realize my question was previous question was phrased, well, vaguely, as I learn from your responses so here's version 2 of my question:
i'm running windows vista and have python 30 ,31 and 26 installed.! when I try to run python form the command line by printing *python *to whichever path i have there (in my case:C:\users\KE>) it runs python 30, but when i try to code something it just gives me a new line without any processing of the code. (for example:2+2 returns a new line) when I tried to change the path to the directory that contains python 31 and enter *python (c:\python31>)*, it just crashes and gives me the following message: *fatal python error: Py_Initialize: can't initialize sys standard streams > * *LookupError: unknown encoding: cp720* * * *This application has requested the Runtime to terminate it in an unusual way. * *Please contact teh application's support team for more Information.* * * When i change the directory to c:\python26 and then enter it works ok. so can anyone tell me why this is happening? PS: I learn from Alan Gauld's response that windows defaults to python30 when i enter python because in the system variables python30 was entered first and I confirmed that that was true, but still python 30 doesn't process my code and python 31 crashes. thanks
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