Yes, as some people have wondered, I did try installing a few versions of python on my computer—I was curious about programming (I'm a games writer) and wanted to learn through practice. I had problems with the installation and was confused about what exactly to install, which has probably resulted in the current situation. I'm not familiar with bash either, but here's what my profile looks like:
# Setting PATH for Python 2.7
# The orginal version is saved in me.bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"
export PATH
# Setting PATH for Python 3.1
# The orginal version is saved in me.bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.1/bin:${PATH}"
export PATH
# Setting PATH for Python 3.1
# The orginal version is saved in me.bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.1/bin:${PATH}"
export PATH
# Setting PATH for Python 3.2
# The orginal version is saved in me.bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.2/bin:${PATH}"
export PATH