Logger Does Not Write to File on AdaLogger SD Card

[jmangum]

Trying to use adafruit_logging to write logs to an SD card on an AdaLogger mounted to a RP Pico W. Writing to SD card works (using csvwriter or simply using file.write), but adafruit_logging does not. Tried the following simple test:

# Debug CP logging 2023/10/07
import board
import sdcardio
import busio
import digitalio
import storage
import adafruit_logging as logging
#
# SPI SD_CS pin
SD_CS = board.GP17

#  SPI setup for SD card
spi = busio.SPI(board.GP18, board.GP19, board.GP16)
sdcard = sdcardio.SDCard(spi, SD_CS)
vfs = storage.VfsFat(sdcard)
try:
    storage.mount(vfs, "/sd")
    print("\nSD card mounted")
    #l.info('\nSD card mounted')
except ValueError:
    print("No SD card")
    #l.error('No SD card')

# Setup log handler
l = logging.getLogger('sdfile')
l.addHandler(logging.FileHandler('/sd/log.txt'))
l.setLevel(logging.DEBUG)
l.debug('debug')

with open("/sd/log.txt", "a") as f:
    f.write("Hello world!\r\n")

I believe that this should have resulted in a Hello world! message then a debug message being written to the log.txt file. The only message written to the log.txt file was the Hello world! message.

Board has Circuit Python 8.2.4 installed.