[Python] How do I echo a variable into a file using python [closed]

I was writing a script to go with my homemade smart home network and I came upon a problem storing variables in a file. Here is an abridged version of the code

import datetime
import os

log = open('log.txt')

def timestamp():
errortime = ('Timestamp: {:%Y-%m-%d %H:%M:%S}'.format(datetime.datetime.now()))
return str(errortime)

def errormessage():
//code

def consolelog():
log.write('Timestamp: ' + timestamp())
log.write('Error Type: ' + errormessage())
log.write('------------------')

try:
prit('hello')
except:
consolelog()
print('done')


The code is meant to try the code 'prit('hello') which would come back as a syntax error thus storing the variable(errortype) as Syntax Error. After this I was trying to insert a timestamp and the error type variable into a log.txt file which was returning the following error:

log.write('Timestamp: ' + timestamp())
can only concatenate str (not "NoneType") to str


can anyone explain a way to input variables into a file without receiving a TypeError?

Continue reading...