python on window

[sandeep patil]

i have install python on window xp os.
C:/program files/python

i have done print program it working but .py can't  working
 help me  to how i will execute this file this file where i will save
it.
path execution how .
tell me about any envorment veriable in python to set before python
editor run,it path. etc
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>>> print ' sandeep patil'
 sandeep patil
>>> print ' sandeep "bhagwan " patil ,msc. java j2ee developer"
SyntaxError: EOL while scanning single-quoted string
>>> print ' sandeep "bhagwan " patil ,msc. java j2ee developer'
 sandeep "bhagwan " patil ,msc. java j2ee developer
>>> import posix

Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    import posix
ImportError: No module named posix
>>> phonebook = {'sandeep':9325,'amit':9822,'anand':9890}
>>> phonebook = {'titu':9423,'dadu':9422,'giri':9326}
>>> inverted_phonebook=invert(phonebook)

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    inverted_phonebook=invert(phonebook)
NameError: name 'invert' is not defined
>>> def invert(table):
    index={}
    for key in table.key():
        value=table[key]
        if not index.has_key(value):
            index[value]=[]
        index[value].append(key)
        return index
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