Detect pip in setup.py

setup.py

try:                                                                                                                                                                                                                    
    using_pip = replacement_run                                                                                                                                                                                         
except NameError:                                                                                                                                                                                                       
    try:                                                                                                                                                                                                                
        import numpy                                                                                                                                                                                                    
    except ImportError:                                                                                                                                                                                                 
        call("pip install numpy==1.6.2", shell=True)

This is the worst setup snippet ever.