Handling command-line args (2)

' '.join(list) can make a string out of the list list, with a blank between each item 
simviz1_options = ' '.join(sys.argv[4:])
Example: 
./loop4simviz1.py 0.5 2 0.5 -b 2.1 -A  3.6
results in the same as 
m_min = 0.5
m_max = 2.0
dm    = 0.5
simviz1_options = '-b 2.1 -A 3.6'

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