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Python 时间戳示例

使用 datetime、time 和 calendar 模块的全面 Python 时间戳代码示例。包括时区处理和最佳实践。

Python Timestamp Examples

Comprehensive Python timestamp code snippets with datetime, time, and calendar modules

Example Category

datetime Module Examples

Basic datetime Operations

from datetime import datetime, timezone

# Get current datetime
now = datetime.now()
print(now)  # 2024-01-01 12:00:00.123456

# Get current UTC datetime  
utc_now = datetime.now(timezone.utc)
print(utc_now)  # 2024-01-01 12:00:00.123456+00:00

# Create specific datetime
dt = datetime(2024, 1, 1, 12, 30, 45)
print(dt)  # 2024-01-01 12:30:45

# From timestamp
timestamp = 1704110400
dt_from_ts = datetime.fromtimestamp(timestamp)
print(dt_from_ts)  # 2024-01-01 12:00:00

Essential datetime operations for working with timestamps and date objects in Python.

Timestamp Conversion

from datetime import datetime, timezone

# DateTime to timestamp
dt = datetime(2024, 1, 1, 12, 0, 0, tzinfo=timezone.utc)
timestamp = dt.timestamp()
print(timestamp)  # 1704110400.0

# Timestamp to datetime
dt_back = datetime.fromtimestamp(timestamp, tz=timezone.utc)
print(dt_back)  # 2024-01-01 12:00:00+00:00

# Current timestamp
current_ts = datetime.now().timestamp()
print(current_ts)  # Current timestamp

Convert between datetime objects and Unix timestamps with timezone awareness.

Python Timestamp Best Practices:

• Always use timezone-aware datetime objects for production code
• Store timestamps in UTC and convert to local time for display
• Use zoneinfo (Python 3.9+) or pytz for timezone handling
• Validate timestamp inputs and handle parsing errors gracefully
• Use time.time() for performance-critical timestamp operations
• Consider using datetime.fromisoformat() for ISO 8601 strings

Test all code snippets in your Python environment before using in production

Some examples require additional libraries like pytz or may need Python 3.9+ for zoneinfo