### Python 時間轉換
```py
from datetime import datetime
iso8601_str = "2023-04-21T10:30:00" # ISO 8601 格式的日期時間字串
# 解析 ISO 8601 字串並轉換為 UNIX 時間戳(秒數)
print(datetime.fromisoformat(iso8601_str).timestamp()) # 輸出:1682073000.0
# 將 UNIX 時間戳轉換為 ISO 8601 格式的字串
print(datetime.fromtimestamp(1682073000).isoformat()) # 輸出:'2023-04-21T10:30:00'
# 將 UNIX 時間戳轉換為 datetime 物件
print(datetime.strptime("20211231235959", "%Y%m%d%H%M%S")) # 輸出: 2021-12-31 23:59:59
# 將 UNIX 時間戳轉換為指定字串格式
print(datetime.fromtimestamp(1682073000).strftime("%Y%m%d%H%M%S")) # 輸出:'20230421103000'
```
### 調整日期
```py
from datetime import datetime, timedelta
# 原始日期
original_date = datetime(2023, 4, 21)
print(original_date + timedelta(days=1)) # 加一天,輸出: 2023-04-22 00:00:00
print(original_date + timedelta(days=-1)) # 減一天,輸出: 2023-04-20 00:00:00
```
### 調整年月
```py
from datetime import datetime
from dateutil.relativedelta import relativedelta
# 原始日期
original_date = datetime(2023, 4, 21)
# 加一個月
next_month = original_date + relativedelta(months=1)
# 加一年
next_year = original_date + relativedelta(years=1)
print("Next Month:", next_month) # 輸出: Next Month: 2023-05-21 00:00:00
print("Next Year:", next_year) # 輸出: Next Year: 2024-04-21 00:00:00
```
### 範圍內隨機一天
```py
import random
from datetime import datetime, timedelta
# 起始日期和結束日期
start_date = datetime(2023, 1, 1)
end_date = datetime(2023, 12, 31)
# 計算日期範圍的天數
days_range = (end_date - start_date).days
# 隨機生成一個範圍內的天數偏移量
random_days_offset = random.randint(0, days_range)
# 根據偏移量計算隨機日期
random_date = start_date + timedelta(days=random_days_offset)
print("Random Date:", random_date)
```