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13 Cards in this Set
- Front
- Back
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inventory = {'apple': 430, 'banana':312} print(list(inventory.values())) |
[430,312] |
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inventory = {'apple': 430, 'banana':312} print(list(inventory.items())) |
[('banana', 312), ('apple', 430)] |
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inventory = {'apple': 430, 'banana':312} for (k,v) in inventory.items(): print (k, v) |
apple 430 banana 312 |
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inventory = {'apple': 430, 'banana':312} print(inventory.get('apple')) print(inventory.get('soda')) print(inventory.get('soda', 0)) |
430 None 0 |
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Difference between using inventory.get('apple') and print(inventory['apple']) ? |
No difference except if .get doesn't find the dict it won't cause a error |
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opposite = {'up':'down', 'right':'wrong'} alias = opposite alias['right'] = 'left' print(opposite['right']) |
left It mutates it |
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opposite = {'up':'down', 'right':'wrong'} alias = opposite.copy() alias['right'] = 'left' print(opposite['right']) print(alias['right']) |
'wrong' 'left' it copies it |
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matrix = {(0,3):1} print(matrix.get((0,3))) |
1 |
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c = [('a',1)] c = dict(c) print(c) |
{'a':1} |
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a = set([1,5]) print(a) a.add(5) print(a) a.add(6) print(a) |
{1,5} {1,5} {1,5,6} |
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a = {} a['uno'] = 'uno'print(a) |
{'uno': 'uno'} |
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inventory = {'apple':20, "pears":35} del inventory['pears'] print(inventory) print(list(inventory.keys()) |
{'apple': 20} ['apple'] |
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inventory = {'apple':20, "pears":35} for k in inventory: print(k, + " -> " + str(inventory[k])) |
apple -> 20 pears -> 35 |
