bashrc python path ordering

[jalal@goku scratch3]$ which -a python
alias python='python3'
	/scratch/sjn-p3/anaconda/anaconda3/bin/python3
	/scratch/sjn-p3/anaconda/anaconda3/bin/python3
	/usr/bin/python3
/scratch/sjn-p3/anaconda/anaconda3/bin/python
/scratch/sjn-p3/anaconda/anaconda3/bin/python
/usr/bin/python
/scratch/sjn-p2/anaconda/anaconda2/bin/python



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I have the following in ~/.bashrc

export PATH=$PATH:/usr/bin/python3
alias python=python3