收集的一些，格式化輸出技巧，會不定期更新
from datetime import datetime """技巧一：數字格式化""" n1: int = 1000000000 n2: int = 1_000_000_000 print(n1) print(n2) # 1000000000 n3: int = 1e9 n4: int = 1e9 n5: float = 1e9 print(n3) # 1000000000.0 print(n4) # 1000000000.0 print(n5) # 1000000000.0 n6: int = 1000000000 print(f"{n6:_}") # 1_000_000_000 print(f"{n6:,}") # 1,000,000,000 print(f"{n6:,d}") # 1,000,000,000 """技巧二: 字串格式化""" name: str = "小明" print(f"{name:>10}") # 減去自身長度，剩下的使用空格補全 print(f"{name:<10}") # 左對齊 print(f"{name:10}") # 也是左對齊，預設行為 print(f"{name:^10}") # 居中 print(f"{name:*^10}") # ***小明**** print(f"{name:=^10}") # ===小明==== print(f"{name:>10}:") # 小明: print(f"{name:_>10}:") # ________小明: print(f"{name:#>10}:") # ########小明: print(f"{name:#<10}:") # 小明########: print(f"{name:|>10}:") # ||||||||小明: """技巧三: 時間格式化""" now: datetime = datetime.now() print(f"{now:%Y-%m-%d %H:%M:%S}") # 2023-03-20 15:57:00 print(f"{now:%c}") # Wed Apr 17 22:18:29 2024 print(f"{now:%x}") # 04/17/24 print(f"{now:%X}") # 15:57:00 print(f"{now:%a}") # Wed print(f"{now:%A}") # Wednesday print(f"{now:%b}") # Apr print(f"{now:%B}") # April print(f"{now:%I%p}") # 10PM """技巧四: 數字格式化""" n: float = 123.456789 print(f"{n:.2f}") # 123.46 print(f"{n:.0f}") # 123 print(round(n, 2)) # 123.46 print(f"{n:,.3f}") # 123.457 print(f"{n:_.3f}") # 123.457 """技巧五: f-sting 格式化""" a: int = 5 b: int = 10 my_var: str = "hello world" print(f"a + b = {a + b}") # a + b = 15 print(f"{a + b = }") # a + b = 15 print(f"{a + b*1000 = :,}") # a + b*1000 = 10,005 print(f"{my_var = }") # my_var = 'hello world' print(f"bool(a) = {bool(a)}") # bool(a) = True print(f"{bool(a) = }") # bool(a) = True