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

### 함수 객체 핸들 def play(): print('play') def stop(): print('stop') def main(): fs = [play, stop] for f in fs: f() if __name__ == '__main__': main() #결과 play stop ### pass by reference def add_ls(ls): ls.append(2) return def main(): ls = [1] print("before:", ls) add_ls(ls) print("after:", ls) if __name__ == '__main__': main() #결과 before: [1] after: [1, 2] ### list/tuple as function argument def ls_..

Python 2016. 4. 28. 20:16

다른 언어에서는 볼 수 없는 순환문에 else 절이 가능한 상황을 설명한다. # 순환문 내에서 조건 분기를 해야 하는 케이스ls = [2, 3] for l in ls: if l > 2: print('I found.') break else: print('Not found.') 결과)Not found. I found. # flag로 순환문 내의 조건 분기를 판단하면 해결할 수 있다.ls = [2, 3]flag = False for l in ls: if l > 2: print('I found.') flag = True break if not flag: print('Not found.') 결과)I found. # Python에서는 for, while 문에서도 else 절을 사용할 수 있다.ls = [2, 3] ..

Python 2015. 7. 7. 21:07