how to change python version on linux
#Check available versions ls /usr/bin/python* #Change the used version 3.5 or 3.7 etc alias python='/usr/bin/python3.x' #do this other thing . ~/.bashrc #Check version python --version
how to change python version on linux
#Check available versions ls /usr/bin/python* #Change the used version 3.5 or 3.7 etc alias python='/usr/bin/python3.x' #do this other thing . ~/.bashrc #Check version python --version
change default python version
sudo update-alternatives --config python
set default python
newDict = {1:"One", 2:"Two", 3:"Three"} x=newDict.setdefault(4,"Four") print(newDict[4]) #returns Four newDict2 = {1:"One", 2:"Two", 3:"Three", "Hello":"World"} y=newDict.setdefault("Hello","Yellow") print(newDict2["Hello"]) #returns World dict1 = {1:"One",2:"Two"} x=dict1.setdefault(3,"Three") x=dict1.setdefault(2,"Duo") print(dict1) #prints {1: 'One', 2: 'Two', 3: 'Three'} #Therefore if value doesn't exist it is given default value, else value of key is returned.
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