The life of TB

# while loop, dict, type annotation의 사용import randomcount: int = 5# Generate 'n' unique random numbers within a rangeran_nums: list = random.sample(range(10), count)d: dict = {num: 'even/odd' for num in ran_nums}while count > 0: cur_num: int = ran_nums[count-1] if cur_num % 2 == 0 : d[cur_num] = 'even' else: d[cur_num] = 'odd' count -= 1print(d)# 결과{2: 'even', 8: 'even'..

Python 2024. 11. 25. 21:16

path module# path module import osimport shutilfrom os import pathprint(os.name)print(path.exists('c:\windows'))print(path.isdir('c:\windows'))print(path.isfile('c:\windows\explorer.exe'))if path.exists('c:\windows\explorer.exe'):    src = path.realpath('c:\windows\explorer.exe')    print(src)    head, tail = path.split(src)    print('path:', head)    print('file:', tail) 결과) ntTrueTrueTruec:\wi..

Python 2024. 11. 24. 19:35

# while loop## Write a while loop that is initialized at 0 and stops at 15.# If the counter is an even number, append the counter to # a list called eve_nums.eve_nums = []start = 0stop = 15while start

Python 2024. 11. 18. 14:28

# 조건식의 결과에 따라 할당문의 내용을 바꿀 수 있다. def main(): userScore = 100 defaultScore = 100  msg = "you did it" if userScore > defaultScore else "you didn't made it" print(msg) if __name__ == "__main__": main() # 결과you didn't made it # 조건식의 결과에 따라 실행 함수를 바꿀 수 있다. def printAdult(): print("adult") def printChild(): print("child") def isAdult(): adult = 0 prtintAdult() if adult else printChild() isAdult() # 결과c..

Python 2024. 10. 15. 16:37

# random, zip, dict 사용해 숫자가 몇 번 나왔는지 카운트 하기 import random def main(): i = random.randint(1, 5) keys, values = [], [0] * i for key in range(i): keys.append(random.randint(1, i)) ds = dict(zip(keys, values)) for key in keys: ds[key] += 1 print('key generated:', keys) print('key count:', ds) pass if __name__ == '__main__': main() # 결과 1 key generated: [2, 1] key count: {2: 1, 1: 1} # 결과 2 key gener..

Python 2023. 5. 2. 23:59

# dict로 구현한 select case def one(): print ("one") def two(): print ("two") def three(): print ("three") def default(): print ("default") func_map = { 1 : one, 2 : two, 3 : three } i = int(input("Select a number (1-3): ")) try: func_map.get(i)() except: default() ===================== Select a number (1-3): 1 one Select a number (1-3): 99 default ===================== # 값을 리턴하는 select case def sel..

Python 2021. 5. 16. 19:31

# tree - preordertree = [('a', [('b', [('d', []), ('e', [])]), ('c', [('f', [])])])] def preorder(tree):stack = [tree[0]]output = []while stack:value, children = stack.pop()output.append(value)stack.extend(reversed(children))return output print(preorder(tree)) # 결과['a', 'b', 'd', 'e', 'c', 'f'] # tree - preordertree = [('a', [('b', [('d', []), ('e', [])]), ('c', [('f', [])])])] from collections ..

Python 2016. 6. 12. 10:25

# datetime module import datetime start = datetime.datetime.now()i = 0while i < 10000:i += 1end = datetime.datetime.now() # 결과0:00:00.014491

Python 2016. 6. 8. 21:54