Hi this is doing my head in. Sometimes functions I have in python (django) return a number and sometimes a nonetype (irrespective of cache period). It prints the cache in the method but the function still seems to return nonetype. Often the cache will not show in a print function but also do not run the method as if it were actually ‘None’

#get total user L3 hours worked def totalUserL3hours(user1):     user_L3_hrs = cache.get('user_L3_hrs'+user1.username)     print("User l3 cache hours are {}".format(user_L3_hrs))     if user_L3_hrs is None:         a=0.0         l3_total = user1.L3s.all()         for l3 in l3_total:             x = l3.indivMachineHoursWorked()             a=a+x         cache.set('user_L3_hrs'+user1.username, a, 1800)         print("User l3 hours are {}".format(a))     return user_L3_hrs  def TotUserL3Mined(user1):     # a = 0.0     # l3_total = request.user.L3s.all()     x = totalUserL3hours(user1)     b = btcToHourL3()     print("xxxxxxxxxxxxxxxxxx is :".format(x))     c = x*b     return c 

with:

User l3 cache hours are 504.41816050055553

xxxxxxxxxxxxxxxxxx is :

Local Variables:

b
1.992805616092481e-05

x
None

Settings:

CACHES = {     'default': {         'BACKEND': 'django.core.cache.backends.db.DatabaseCache',         'LOCATION': 'my_cache_table',     } }