The life of TB

# 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 2025. 4. 1. 09:48

# Sequences are one of Python's most basic data structures.# A sequence contains items arranged in order,# and you can access each item using an integer index# that represents its position in the sequence.# Most sequence types also support an operation called slicing.# And you can use this operation to access the subset of the items# in a given sequence.from collections import dequenames = ["Jim..

Python 2025. 3. 31. 19:32

# The counter collection class is specifically designed for count purpose.# A Counter can be instantiated from an iterable (such as a list or a string) or# a mapping (like a dictiionary). Hashable objects are keys and their frequencies are values.from collections import Counterprint(f"Is the counter class a subclass of dict? {issubclass(Counter, dict)}")# Initialize with a listletters = ["a", "b..

Python 2025. 3. 31. 14:15

# Adding items to a dictionary# ============================# That's what the documentation means, when it says that dictionaries preserve the insertion# order.## As I've mentioned, if you're using Python version 3.5 or earlier, you'll get the entries# appearing in random order. Prior to Python 3.6, dictionaries were unordered.# You couldn't rely on the order of the keys, when iterating over the..

Python 2025. 3. 27. 07:03

# 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 2025. 3. 26. 13:38

특성1. def 키워드를 사용해서 정의한다.2. 리턴 타입에 대한 정의가 필요없다.3. return 이 없으면 None을 반환한다. (= 명시적으로 return 하지 않아도 무조건 None을 반환한다.) # Function Signatures# ===================# The term function signate means the definition of a function.# That includes the function's name, and the parameters that it defines.## print(*objects, sep='', end='\n', file=sys.stdout, flush=False)# The name of the function is print.# The..

Python 2024. 12. 31. 13:04

# Docstring Best Practices# ========================# - Enclose docstrings in triple quotes# - First line should be summary sentence of functionality# - Modules: List important classes, functions, exceptions# - Classes: List important methods# - Functions:# = List parameters and explain each, one per line# = If there's a return value list it, otherwise omit# = If the function raises except..

Python 2024. 12. 30. 21:35

# Tuples are Immutable# ====================# Alright, that's the main difference between a tuple and a list.# Tuples are immutable.# Because they don't have the overhead of the methods needed to change them,# tuples use less memory that lists.# That's one reason why you might want to use a tuple.# If your program's dealing with millions of these things, you can save# memory by using a tuple.# T..

Python 2024. 12. 29. 21:13