TypeError: unsupported operand type(s) for |: 'type' and 'type'

[lufq7]

Dear Zipline Maintainers,

Before I tell you about my issue, let me describe my environment:

Environment

• Operating System: (Windows Version 10.0.22631.4460)
• Python Version: $ python --3.9.20
• Python Bitness: $ python -c 'import math, sys;print(int(math.log(sys.maxsize + 1, 2) + 1))'
• How did you install Zipline: conda install -c conda-forge zipline-reloaded
• Python packages: $ pip freeze or $ conda list

Now that you know a little about me, let me tell you about the issue I am
having:

Description of Issue

In jupyter notebook I type:

from zipline import run_algorithm

report below:

TypeError Traceback (most recent call last)
Cell In[1], line 1
----> 1 from zipline import run_algorithm

File ~\anaconda3\envs\zip38\lib\site-packages\zipline_init_.py:21
17 import numpy as np
19 # This is not a place to dump arbitrary classes/modules for convenience,
20 # it is a place to expose the public interfaces.
---> 21 from zipline.utils.calendar_utils import get_calendar
23 from . import data
24 from . import finance

File ~\anaconda3\envs\zip38\lib\site-packages\zipline\utils\calendar_utils.py:5
2 from functools import partial
4 import pandas as pd
----> 5 from exchange_calendars import ExchangeCalendar as TradingCalendar
6 from exchange_calendars import clear_calendars
7 from exchange_calendars import get_calendar as ec_get_calendar # get_calendar,

File ~\anaconda3\envs\zip38\lib\site-packages\exchange_calendars_init_.py:16
1 #
2 # Copyright 2018 Quantopian, Inc.
3 #
(...)
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
---> 16 from .calendar_utils import (
17 clear_calendars,
18 deregister_calendar,
19 get_calendar,
20 get_calendar_names,
21 register_calendar,
22 register_calendar_alias,
23 register_calendar_type,
24 resolve_alias,
25 names_to_aliases,
26 aliases_to_names,
27 )
28 from .exchange_calendar import ExchangeCalendar
30 all = [
31 "clear_calendars",
32 "deregister_calendar",
(...)
41 "ExchangeCalendar",
42 ]

File ~\anaconda3\envs\zip38\lib\site-packages\exchange_calendars\calendar_utils.py:3
1 from typing import Literal
----> 3 from .calendar_helpers import parse_date, Date
4 from .always_open import AlwaysOpenCalendar
5 from .errors import CalendarNameCollision, CyclicCalendarAlias, InvalidCalendarName

File ~\anaconda3\envs\zip38\lib\site-packages\exchange_calendars\calendar_helpers.py:24
20 NP_NAT = pd.NaT.value
22 # Use Date type where input does not need to represent an actual session
23 # and will be parsed by parse_date.
---> 24 Date = pd.Timestamp | str | int | float | datetime.datetime
26 # Use Session type where input should represent an actual session and will
27 # be parsed by parse_session.
28 Session = Date

TypeError: unsupported operand type(s) for |: 'type' and 'type'

What did I do wrong?

Sincerely,

Lufq7