Check if value already exists within list of dictionaries?

Question

I\'ve got a Python list of dictionaries, as follows:

a = [
    {\'main_color\': \'red\', \'second_color\':\'blue\'},
    {\'main_color\': \'yellow\', \'secon         


        

Answer 1

Maybe this helps:

a = [{ 'main_color': 'red', 'second_color':'blue'},
     { 'main_color': 'yellow', 'second_color':'green'},
     { 'main_color': 'yellow', 'second_color':'blue'}]

def in_dictlist((key, value), my_dictlist):
    for this in my_dictlist:
        if this[key] == value:
            return this
    return {}

print in_dictlist(('main_color','red'), a)
print in_dictlist(('main_color','pink'), a)