Python syntax to set value of custom field

1

what is python syntax to set value of custom field by custom app?

2

The same as any standard field in standard app. Share code to get more help.

3

i have added custom field named as ‘validity_acc_to_today’ in Bank Gaurantee.
and i want to change it daily
for this I had write this code

task.py is here

def daily():
	e=frappe.db.get_value("Bank Guarantee",None, "end_date")
	n=frappe.utils.nowdate()
	i=frappe.utils.data.date_diff (e, n)
	doc.validity_acc_to_today=i

hooks.py is

scheduler_events = {
 	"all": [
 		"bg.tasks.all"
 	],
 	"daily": [
 		"bg.tasks.daily"
 	],

 	"hourly": [
 		"bg.tasks.hourly"
 	],
 	"weekly": [
 		"bg.tasks.weekly"
 	],
	
 	"monthly": [
 		"bg.tasks.monthly"
 	],
	"cron": {
        "59 10 * * *": [
            "bg.task.every_day_at_10_59"
        ]
},
}

is it r8?
because I’m not getting expected output

4

Where did you get doc from?

Please wrap your code inside ``` characters to improve readability

5

task.py

def hourly():
    # stuff to do every 10 minutes
    pass



def all():
    # stuff to do every 10 minutes
    pass



def weekly():
    # stuff to do every 10 minutes
    pass


def monthly():
    # stuff to do every 10 minutes
    pass






def every_day_at_10_59():
    # stuff to do every day at 6:15pm
    	e=frappe.db.get_value("Bank Guarantee",None, "end_date")
	n=frappe.utils.nowdate()
	i=frappe.utils.data.date_diff (e, n)
	cur_frm.set_value("validity_acc_to_today", i);



	
def daily():
	e=frappe.db.get_value("Bank Guarantee",None, "end_date")
	n=frappe.utils.nowdate()
	i=frappe.utils.data.date_diff (e, n)
	doc.validity_acc_to_today=i
	```



hooks.py

```scheduler_events = {
 	"all": [
 		"bg.tasks.all"
 	],
 	"daily": [
 		"bg.tasks.daily"
 	],

 	"hourly": [
 		"bg.tasks.hourly"
 	],
 	"weekly": [
 		"bg.tasks.weekly"
 	],
	
 	"monthly": [
 		"bg.tasks.monthly"
 	],
	"cron": {
        "59 10 * * *": [
            "bg.task.every_day_at_10_59"
        ]
},
}

# Testing
6

Try

def daily():
	doc=frappe.get_doc("Bank Guarantee", None)
	n = frappe.utils.nowdate()
	i = frappe.utils.data.date_diff (doc.end_date, n)
	doc.validity_acc_to_today=i
    doc.save()

I am guessing Bank Guarantee is a Single DocType

7

I tried this… but still not getting expected output