Printing data from two dictionaries in one for loop in Python

Question

I am trying to loop 2 lots of 'key, value' so I can print 2 lots of data on the same line. However it seems my code prints the output I need, but it is repeating 4 times whereas I need it to only print once. My piece of code:

    for key1, value1 in dict1.items():
        pct = value1 * 100.0 / s // 1
        for key2, value2 in dict2.items():
            pct2 = value2 * 20
            print(key1, ":", int(pct), "% vs", pct2, "%")

Output:

A : 55 % vs 60 %
A : 55 % vs 20 %
A : 55 % vs 0 %
A : 55 % vs 20 %
B : 25 % vs 60 %
B : 25 % vs 20 %
B : 25 % vs 0 %
B : 25 % vs 20 %
C : 0 % vs 60 %
C : 0 % vs 20 %
C : 0 % vs 0 %
C : 0 % vs 20 %
D : 17 % vs 60 %
D : 17 % vs 20 %
D : 17 % vs 0 %
D : 17 % vs 20 %

But the output I'm needing is:

A : 55 % vs 60 %
B : 25 % vs 20 %
C : 0 % vs 0 %
D : 17 % vs 20 %

I have tried many ways around this, but I cant seem to figure a way to print the output I need.

Błotosmętek · Accepted Answer · 2020-04-30 18:21:23Z

1

for k in dict1: 
    print("{} : {}% vs {}%".format(k, int(dict1[k]*100.0 / s), dict2[k]*20))

edited Apr 30, 2020 at 18:21

answered Apr 30, 2020 at 17:58

Błotosmętek

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Comments

Jesse · Accepted Answer · 2020-04-30 18:25:54Z

1

For Python 3.6+, I'd recommend

for k, v in dict1.items(): 
    print(f'{k} : {v * 100.0 / s}% vs {dict2[k] * 20}%')

Otherwise, I'd suggest

for k, v in dict1.items(): 
    print('{} : {}% vs {}%'.format(k, int(v * 100 / s), dict2[k] * 20))

This also enforces the implicit precondition of dict2 having keys that are a weak superset of dict1's keys (i.e. dict2 has all of the keys that dict1 has and maybe more.

edited Apr 30, 2020 at 18:25

answered Apr 30, 2020 at 18:11

Jesse

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Comments

Irutar · Accepted Answer · 2020-04-30 18:03:36Z

0

Probably not the best solution but I hope that it will work

tmpValueForKey1 = 1
tmpValueForKey2 = 1
for key1, value1 in dict1.items():
    pct = value1 * 100.0 / s // 1
    for key2, value2 in dict2.items():
        pct2 = value2 * 20
        if tmpValueForKey1 == tmpValueForKey2:
            print(key1, ":", int(pct), "% vs", pct2, "%")
        tmpValueForKey2 = tmpValueForKey2 + 1
    tmpValueForKey1 = tmpValueForKey1 + 1

answered Apr 30, 2020 at 18:03

Irutar

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Comments

Moosa Saadat · Accepted Answer · 2020-04-30 18:10:20Z

-1

You can use the zip() function to create an Iterable. Then, you can loop over the values like this:

for keys in zip(dict1, dict2):

  # Get Keys
  key1 = keys[0]
  key2 = keys[1]

  # Get Values
  pct1 = dict1[key1]
  pct2 = dict2[key2]
  print(key1, ":", int(pct1), "% vs", pct2, "%")

answered Apr 30, 2020 at 18:10

Moosa Saadat

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