The life of TB

# set 요소 추가, 삭제 nums1 = set()nums2 = set()nums1.add(1)nums2.add(2) nums1.update(nums2) nums1.update([3])nums1.update({4})nums1.update('4')print(nums1)nums1.remove('4')print(nums1)  # 결과{1, 2, 3, 4, '4'}{1, 2, 3, 4} # set - operatorsa, b = set(), set()a = {1, 2}b = {1, 3} print(a - b)print(a.difference(b)) print(a ^ b)print(a.symmetric_difference(b)) print(a & b)print(a.intersection(b)) x, y = se..

Python 2024. 12. 2. 16:48

# List comprehension## It just make creating lists much more efficient and# reduce drastically the amount of code you need to create simple lists.# They become nearly impossible to live without.numbers: list[int] = [1, 2, 3]numbers_lc = [num for num in range(1, 4)]print(numbers)print(numbers_lc)print(f"Is the numbers equal to numbers_lc? : {numbers == numbers_lc}")doubled: list[int] = []for num ..

Python 2024. 12. 2. 15:17

# max() - list ls = [('c', 1), ('b', 2), ('a', 3)] # max by first itemo = max(ls)print(o) # max by second itemo = max(ls, key = lambda x: x[1])print(o) # 결과('c', 1)('a', 3)  # max() - dict ds = {'c': 1, 'b': 2, 'a': 3} # max by keyo = max(ds)print(o) # max by valueo = max(ds, key = ds.__getitem__)print(o) # 결과ca # dict의 key= 함수에 람다 적용으로 원하는 조건으로 최대값 얻기d: dict[str, int] = {'Bob': 29, 'Sally': 19,..

Python 2024. 12. 2. 08:34

# 리스트를 만들어서 던짐 def squareList(nums): result = [] for n in nums: result.append(n * n) return result myNums = squareList([1, 2, 3, 4, 5]) print(myNums) # 결과[1, 4, 9, 16, 25] # yield를 사용해 객체를 던짐 def squareList(nums): for n in nums: yield (n * n) myNums = squareList([1, 2, 3, 4, 5]) for n in myNums: print(n, end = ' ') # 결과1 4 9 16 25  # flatten listnested_ls = [[1, 2], [3, 4], [5]] def flatten(nest..

Python 2024. 12. 1. 20:21

# 아이템의 카운트를 위해 내장 함수 사용 ls = ["a", "b", "c"] for count, l in enumerate(ls): print("Count: {}, Item: {}".format(count, l)) # 결과Count: 0, Item: aCount: 1, Item: bCount: 2, Item: c # make enum list ls = ['a', 'b', 'c'] print(list(enumerate(ls))) # 결과[(0, 'a'), (1, 'b'), (2, 'c')] # 유용하게 사용하기 위해 dict로 생성nums = ['a', 'bb', 'ccc']pairs = dict(enumerate(nums))print(pairs)for i in range(len(nums)): p..

Python 2024. 12. 1. 16:45

# very simple website status checkerimport requestsfrom requests import Response# Response: this will give us back a response object# which will contain all the necessary information regarding# the website.def get_response(url: str) -> Response: return requests.get(url)def show_response_info(response: Response) -> None: print("Status:", response.status_code) print("OK:", response.ok) ..

Python 2024. 11. 28. 19:13

# Building functionality that already exists from scratch# in most cases in going to be a complete waste of time.# args -> *values, *args# So we can pass in an unlimited amount of argument by default.print('a', 'b', 'c', sep='|')people: list[str] = ['Mario', 'James', 'Hannah']print(*people, sep=', ', end='.') # It's inserting them as argument, not as a list.print('\n', end='')print(people)# 결과a|..

Python 2024. 11. 28. 16:38

### Unpacking Arguments in Pythondef foo(x, y, z): print(x, y, z)def mySum(*args): return sum(args)def main(): ls = [1, 2, 3] # Unpacking list into three arguments foo(*ls) print('\t') print(list(range(3, 6))) print('\t') args = [3, 6] print(list(range(*args))) print('\t') print(mySum(1, 2, 3, 4, 5)) print('\t') # unpacking of dictionary items using ** ..

Python 2024. 11. 28. 16:32