Second elif always reports a syntax error..

[ADenislebel]

Using Thonny I have a function that returns a syntax error upon the second elif

def Bsmt_htg_upd(mode):
global Tmp_val
global Stbk_stpt,Bsmt_stpt
global Nrml_stpt,Curt_stpt

if mode == 0:				# bsmt heat off
    disable_io(Bht)			# put gas htr off
    if Debug==1:print('Gas off')
    return
elif mode == 1:				# bsmt in low
    Bsmt_stpt = Stbk_stpt	# use setback stpt 		

elif mode == 2: # invalid syntax happens here
Bsmt_stpt = Nrml_stpt # use normal stpt
elif mode == 3: # bsmt in auto
Bsmt_stpt = Curt_stpt # use current on main floor

Bsmt_stpt -= GAS_OFT		# basement offset from main
if Tmp_val[Bsmt] < Bsmt_stpt-HTR_DBD:	# basmt temp too low
    enable_io(Bht)				# enable HTR io
    if Debug == 1:				# if debug on
        print('Gas on')			# print action
elif Tmp_val[Bsmt] > Bsmt_stpt+HTR_DBD:	# warm enough 
    disable_io(Bht)					# htg off remove BHT from io byt
    if Debug == 1:
        print('Gas off')

The docs I rely on are only those of standard Python as I was unable to find any MicroPython specific
doc for the If/elif/else expressions. I'm using:
MicroPython v1.24.1 on 2024-11-29; Raspberry Pi Pico with RP2040
Sorry I could not attach the file directly so the idents are not proper
Type "help()" for more information.
Anyone willing to help a newbie with my home automation project that if frozen until I can get around this
seemingly simple bug.
Regards Denis Lebel

[robert-hh]

It looks like an Indentition fail. I'd it looks ok in Thonny, check if there is a mix of tab and spaces.
When poting, please enclose code in lines consisting of three backtabs ```

[ADenislebel]

Thanks that was it. I did not like that the editor in Thonny showed the tabs in yellow so I changed it to not show
them but I didn't realize it would bite me back...