[ashok@ashok lab]$ cat hello.py
#!/usr/bin/python
#
print "Hello Everyone"
[ashok@ashok lab]$ ./hello.py
bash: ./hello.py: Permission denied
[ashok@ashok lab]$ ls -l hello.py
-rw-rw-r--. 1 ashok ashok 43 Aug 30 11:57 hello.py
[ashok@ashok lab]$ chmod 764 hello.py
[ashok@ashok lab]$ ls -l hello.py
-rwxrw-r--. 1 ashok ashok 43 Aug 30 11:57 hello.py
[ashok@ashok lab]$ chmod 664 hello.py
[ashok@ashok lab]$ ./hello.py
bash: ./hello.py: Permission denied
[ashok@ashok lab]$ python hello.py
Hello Everyone
[ashok@ashok lab]$
