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from collections import Counter
words = ["apple", "banana", "apple", "cherry", "banana", "apple"]
word_counts = Counter(words)
print(word_counts)
# Output: Counter({'apple': 3, 'banana': 2, 'cherry': 1})
# Bonus: the top 2 most frequent elements
print(word_counts.most_common(2))
# Output: [('apple', 3), ('banana', 2)]
__call__ — a data filter object!** 🧠class EvenFilter:
def __init__(self, threshold):
self.threshold = threshold
def __call__(self, numbers):
return [n for n in numbers if n % 2 == 0 and n > self.threshold]
f = EvenFilter(5)
nums = [1, 4, 6, 7, 10]
print(f(nums)) # [6, 10]
f2 = EvenFilter(8)
print(f2(nums)) # [10]
__call__ turns an object into a "smart function" with memory and customizable logic. 💡
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Forwarded from Udemy Free
731B3C9353AE09ABE19Edict1 = {'a': 1, 'b': 2}
dict2 = {'b': 99, 'c': 4}
combined = dict1 | dict2
# Result: {'a': 1, 'b': 99, 'c': 4} (values of the second dictionary replace the first)dict1 |= dict2
Forwarded from Mira
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__dict__.vars().vars(obj)
{'x': 10}print(vars(user))
vars() works with modules, classes, and any objects with dict.
vars(module)
🔥 