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+--- Thread: TypeError: __str__ returned non-string error (/thread-15583.html)
TypeError: __str__ returned non-string error - jolinchewjb - Jan-23-2019
the result is : TypeError: __str__ returned non-string (type NoneType), but i think my __str__ function is correct,any idea? thanks, this is under python 3.5.1
class srvinfo(object):
def __init__(self,id,name=None,comp=None):
self.id=id
self.name=name
self.comp=comp
def change_usr(self,id,name,comp):
self.id=id
self.name=name
self.comp=comp
def __str__(self):
return f '{self.id} {self.name} : {self.comp}'
s=srvinfo(1021)
print(s)
s.change_usr(1022,'Jeffery','Microsoft')
print(s)
RE: TypeError: __str__ returned non-string error - jolinchewjb - Jan-23-2019
class srvinfo(object):
def __init__(self,id,name=None,comp=None):
self.id=id
self.name=name
self.comp=comp
def change_usr(self,id,name,comp):
self.id=id
self.name=name
self.comp=comp
def __str__(self):
return f '{self.id} {self.name} : {self.comp}'
s=srvinfo(1021)
print(s)
s.change_usr(1022,'Jeffery','Microsoft')
print(s)
RE: TypeError: __str__ returned non-string error - buran - Jan-23-2019
Please, when post code, make sure indentation is preserved. As is at the moment it is non-sense.
Also, post full traceback in error tags.
Finally, based on trying to use f-strings, this code is intended for python version 3.6 or higher. It cannot run on 3.5.1.
RE: TypeError: __str__ returned non-string error - jolinchewjb - Jan-23-2019
my question is how to translate: return f '{self.id} {self.name} : {self.comp}' in Python 3.6.1 to Python 3.5.1, i have to use Python 3.5.1
RE: TypeError: __str__ returned non-string error - buran - Jan-23-2019
use format()
return '{} {} : {}'.format(self.id, self.name, self.comp)
RE: TypeError: __str__ returned non-string error - jolinchewjb - Jan-24-2019
thanks