42 lines
1.0 KiB
Python
42 lines
1.0 KiB
Python
def divisible_by_7(n: int) -> list[int]:
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"""
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Returns a list of all numbers till 'n' that are divisible by '7'
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"""
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return [x for x in range(1, n) if x % 7 == 0]
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def contains_3(n: int) -> list[int]:
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"""
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Returns a list of all numbers that contain the digit '3' in them
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"""
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return [x for x in range(1, n) if '3' in str(x)]
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def count_spaces(string: str) -> int:
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"""
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Count the spaces in a string
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"""
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return len([ch for ch in string if ' ' == ch])
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def remove_vowels(string: str) -> str:
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"""
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Remove all vowels from the string
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"""
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return ''.join([ch for ch in string if ch.lower() not in 'aeiou'])
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def word_lengths(string: str) -> dict[str, int]:
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"""
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Create a dictionary of all words with their lengths
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"""
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return {word: len(word) for word in string.split(' ') if len(word) > 0}
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def prime_numbers(n: int) -> list[int]:
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"""
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Returns a list of all prime numbers till 'n' (HARD)
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"""
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return [x for x in range(2, n) if all(x % y != 0 for y in range(2, x))]
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