The life of TB

# Anonymous function and Lambda Expression# def func(args):# return ret_val## func = landa arg: ret_valdef f(x): return x - 1print(f(3))print(type(f))ld_f = lambda x: x - 1print(ld_f(3))print(type(ld_f))def last_char(s): return s[-1]print(last_char('hello'))ld_f2 = lambda s: s[-1]print(ld_f2('hello'))# 결과22oo ### 람다 사용"""1. 아규먼트는 제한 없이 사용 가능, 단 평가식은 한 개만2. 함수 객체가 쓰이는 곳이면 대용 가능 (람다는 함수 객체..

Python 2024. 12. 26. 06:33

x = [1, 2]y = [1, 2]print(x == y) # equality operatorprint(x is y) # identity operator# Output:TrueFalsea = 2b = 2print(a == b) # equality operatorprint(a is b) # identity operator# Output:TrueTrueo = 'b' > 'a'print(o)# Output:Trueo = [1, 2] > [2, 1]print(f"1. {o}")o = [4, 1] > [3, 1]print(f"2. {o}")o = [1, [2, 3]] > [1, [2, 4]]print(f"3. {o}")o = [1, [2, 10]] > [1, [2, 9]]print(f"4. {o}")# Outp..

Python 2024. 12. 25. 08:27

# Mutable objectl = [1, 2, 3]print(f"Address of l is {id(l)}")l += [4]print(f"Address of l is {id(l)}")# Immutable objects = 'abc'print(f"Address of s is {id(s)}")s += 'd'print(f"Address of s is {id(s)}")# Output:Address of l is 1621540708864Address of l is 1621540708864Address of s is 1621541747712Address of s is 1621542153616

Python 2024. 12. 23. 17:06

# convert a given number of seconds into hours, minutes, # and secondstotal_seconds = 7385hours, remaining_seconds = divmod(total_seconds, 3600)minutes, second = divmod(remaining_seconds, 60)print(f"{total_seconds=}", end=' ')print(f"{hours=}", end=' ')print(f"{minutes=}", end=' ')print(f"{second=}")# 결과total_seconds=7385 hours=2 minutes=3 second=5 from datetime import datefrom datetime import t..

Python 2024. 12. 23. 11:08

# Types of Testing# ================# Unit Testing:# - Tests individual components or functions in isolation.# - Ensures that each part of the code works correctly on its own.## Integration Testing:# - Tests the interaction between different components or modules.# - Ensures that integrated parts of the application work together.## Testing in Python# =================# unittest# - Buil..

Python 2024. 12. 23. 08:44

# Decorators# ==========# Decorator funcdef printer(func): def wrapper(*args, **kwargs): print("Before calling {func.__name__}()...") func(*args, **kwargs) print("After calling {func.__name__}()...") return wrapper# func to be decorateddef say_hello(name: str): print(f"Hello, {name}")# say_hello("John")# method 1. Create another functionsay_to_person = printer(say_h..

Python 2024. 12. 23. 08:41

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained IterablesTo understand what yield does, you must understand what generators are. And before generators come iterables. When you create a list, you can read its items one by one, and it's called iteration :>>> mylist = [1, 2, 3]>>> for i in mylist :...    print(i)123Mylist is an iterable. When you use a comprehension lis..

Python 2024. 12. 22. 19:02

# Duck Typing with Protocols# ==========================# Duck Typing is a powerful feature of Python# that allows us to write flexible code by focusing# on the behavior of objects, not their type.from typing import Protocolclass Flyer(Protocol): def fly(self) -> str: ...class Bird: def fly(self) -> str: return 'Bird is flying'class Airplane: def fly(self) -> str: return '..

Python 2024. 12. 20. 16:13