dict-count.py(file created)
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| 1 | + | # You need to write a loop that counts the occurrences of each word in a list. | |
| 2 | + | # | |
| 3 | + | # Consider, if you had a big str that was a text, like say: https://zcw.guru/kristofer/hamlet | |
| 4 | + | # | |
| 5 | + | # strive to be "pythonic" in your code expressions, okay? | |
| 6 | + | ||
| 7 | + | colors = ["red", "green", "blue", "green", "red", "green"] | |
| 8 | + | ||
| 9 | + | # Not Pythonic Code | |
| 10 | + | d = {} | |
| 11 | + | for color in colors: | |
| 12 | + | if color not in d: | |
| 13 | + | d[color] = 0 | |
| 14 | + | d[color] += 1 | |
| 15 | + | ||
| 16 | + | # Pythonic Code | |
| 17 | + | d = {} | |
| 18 | + | for color in colors: | |
| 19 | + | d[color] = d.get(color, 0) + 1 # notice, no need for if | |
| 20 | + | ||
| 21 | + | # Another Pythonic Code | |
| 22 | + | from collections import defaultdict | |
| 23 | + | d = defaultdict(int) | |
| 24 | + | for color in colors: | |
| 25 | + | d[color] += 1 | |
| 26 | + | ||
| 27 | + | # code output | |
| 28 | + | # {'red': 2, 'green': 3, 'blue': 1} | |
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