How to get the first value in a python dictionary

Question

I have a dictionary like this:

myDict = {  
    \'BigMeadow2_U4\': (1609.32, 22076.38, 3.98),  
    \'MooseRun\': (57813.48, 750187.72, 231.25),  
    \'Hw         


        

Answer 1

If you want ordered dictionary, use:

from collections import OrderedDict
ordered = OrderedDict(
    ('BigMeadow2_U4', (1609.32, 22076.38, 3.98)),  
    ('MooseRun', (57813.48, 750187.72, 231.25)),  
    ('Hwy14_2', (991.31, 21536.80, 6.47)) 
)
first_values = [v[0] for v in ordered.values()]

The output order will be exactly as your input order.