Python – How to loop a dictionary

In this tutorial, we will show you how to loop a dictionary in Python.

1. for key in dict:

1.1 To loop all the keys from a dictionary – for k in dict:

    for k in dict:        print(k)

1.2 To loop every key and value from a dictionary – for k, v in dict.items():

    for k, v in dict.items():        print(k,v)

P.S items() works in both Python 2 and 3.

2. Python Example

Full example.

test_dict.py

def main():    stocks = {        'IBM': 146.48,        'MSFT':44.11,        'CSCO':25.54    }    #print out all the keys    for c in stocks:        print(c)    #print key n values    for k, v in stocks.items():        print("Code : {0}, Value : {1}".format(k, v))if __name__ == '__main__':    main()

Output

MSFTIBMCSCOCode : MSFT, Value : 44.11Code : IBM, Value : 146.48Code : CSCO, Value : 25.54

P.S Tested with Python 2.7.10 and 3.4.3