Pycronofy时区ID设置异常：指定时区后仍返回UTC时间求助

Hey there, let's dig into why your pycronofy call is still returning UTC times even when you specify tzid='Asia/Kolkata'. I've run into similar timezone quirks with calendar APIs before, so here are some practical steps to fix this:

1. Upgrade pycronofy to the latest version #

Older versions of the library might have bugs in timezone handling. First, make sure you're running the most recent release:

pip install --upgrade pycronofy

After upgrading, re-run your code to see if the timezone starts working as expected.

2. Specify timezone when initializing the Cronofy client #

Sometimes setting the timezone only in read_events() isn't enough—try passing the tzid parameter when you create your Cronofy client instance instead:

cronofy = Cronofy(
    client_id='YOUR_CLIENT_ID',
    client_secret='YOUR_CLIENT_SECRET',
    tzid='Asia/Kolkata'
)

# Then call read_events (you can keep the tzid parameter here too, just to be safe)
events = cronofy.read_events(
    calendar_ids=('CAL_ID',),
    from_date=from_date,
    to_date=to_date,
    tzid='Asia/Kolkata'
)
print(events.json())

This ensures the timezone is applied across all API calls from the client, not just this single request.

3. Manually convert UTC times to Asia/Kolkata (temporary workaround) #

If the above steps don't work, you can manually convert the UTC timestamps returned by the API to your desired timezone using Python's built-in libraries:

For Python 3.9+ (using zoneinfo): #

from zoneinfo import ZoneInfo
import datetime

event_data = events.json()
for event in event_data['events']:
    # Parse UTC time from the API response
    utc_start = datetime.datetime.fromisoformat(event['start'].replace('Z', '+00:00'))
    # Convert to Asia/Kolkata
    ist_start = utc_start.astimezone(ZoneInfo('Asia/Kolkata'))
    print(f"Event start (IST): {ist_start}")

For Python 3.8 and below (using pytz): #

First install pytz if you haven't already:

pip install pytz

Then convert the times:

import pytz
import datetime

event_data = events.json()
ist_tz = pytz.timezone('Asia/Kolkata')
for event in event_data['events']:
    utc_start = datetime.datetime.fromisoformat(event['start'].replace('Z', '+00:00'))
    ist_start = utc_start.replace(tzinfo=pytz.utc).astimezone(ist_tz)
    print(f"Event start (IST): {ist_start}")

4. Verify the Cronofy API directly (bypass the library) #

To rule out whether the issue is with pycronofy or the Cronofy API itself, make a direct API call using requests to check the response:

import requests

# Replace with your actual access token
headers = {
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
    'Content-Type': 'application/json'
}

params = {
    'calendar_ids': 'CAL_ID',
    'from': from_date.isoformat(),
    'to': to_date.isoformat(),
    'tzid': 'Asia/Kolkata'
}

response = requests.get('https://api.cronofy.com/v1/events', headers=headers, params=params)
print(response.json())

• If this direct call returns Asia/Kolkata times, the problem is with pycronofy not handling the timezone parameter correctly. You can report this as an issue in the library's repository, or modify the library's code to properly pass/parse the timezone.
• If the direct call still returns UTC, double-check your calendar's timezone settings in Cronofy, and ensure the tzid parameter is spelled correctly (it should be exactly Asia/Kolkata).

内容的提问来源于stack exchange，提问作者Anupam