PYTHON2.7 64bit version

I used to use the 32-bit version of python.2.7.11, but I heard that the memory can only be used up to 2G (?), So I tried to change to the 64-bit version. I installed the windows64bit version of python 2.7.13 and started IDLE for trial, but it doesn't start. Even if I execute the created script, the command prompt only pops up for a moment and there is no sign that it is being executed. What's wrong?

IDLE does not start Even if I execute the created script, the command prompt only pops up for a moment and there is no sign that it is being executed. Type python at the command prompt to start Python 2.7.13 normally When you enter python from the command prompt, Python 2.7.13 (......) [MSC v.1500 64 bit (AMD64)] om win32 is displayed. If you type python hello.py at the command prompt for hello.py that only says print "hello", SyntaxError: invalid syntax will be displayed.

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