json_key['cpu_temp'] = float(cpu_value.rstrip('\n')) TypeError: a bytes-like object is required, not 'str' code example

Example: what is r strip function in python

#!/usr/bin/python

str = "     this is string example....wow!!!     ";
print str.rstrip()
str = "88888888this is string example....wow!!!8888888";
print str.rstrip('8')

#the answer

#this is string example....wow!!!
#88888888this is string example....wow!!!