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Make Python3.6 the default interpreter when running the command python filename.py in terminal?
trying to install mysql-connector for python 3How to update pip3 sub-version?pip3 missing dependencyImportError: cannot import name 'main' after installing python3.6 and pipenvInstalling pip3How do I un-screw up a Python/Pip installation after doing the mistake of running sudo pip multiple times?Problem with python in Ubuntu 18.10
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I have three versions of python on ubuntu 18.04
when running python -V in terminal it produces Python 2.7.15rc1
and when running python3 -V it produces Python 3.7.2
You could see the paths of python versions on my OS from this picture here is the screeshot
but when running pip install package-name or pip3 install package-name it installs the package in python3.6,
Now as all the packages installed on python3.6, I want to run my programs in terminal on python3.6 not Python 2.7.15rc1 or Python 3.7.2
as in the picture
My problem is:
when I run python filename.py, it interpreted on Python 2.7.15rc1 so it produces an error that says package not found, and the same when running python3 filename.py it interpreted on Python 3.7.2 and it produces an error that says package not found
Now I want to set Python3.6 to be the default interpreter when I run a program in the terminal because it has all the packages installed to it!
python python3
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
add a comment
|
I have three versions of python on ubuntu 18.04
when running python -V in terminal it produces Python 2.7.15rc1
and when running python3 -V it produces Python 3.7.2
You could see the paths of python versions on my OS from this picture here is the screeshot
but when running pip install package-name or pip3 install package-name it installs the package in python3.6,
Now as all the packages installed on python3.6, I want to run my programs in terminal on python3.6 not Python 2.7.15rc1 or Python 3.7.2
as in the picture
My problem is:
when I run python filename.py, it interpreted on Python 2.7.15rc1 so it produces an error that says package not found, and the same when running python3 filename.py it interpreted on Python 3.7.2 and it produces an error that says package not found
Now I want to set Python3.6 to be the default interpreter when I run a program in the terminal because it has all the packages installed to it!
python python3
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41
add a comment
|
I have three versions of python on ubuntu 18.04
when running python -V in terminal it produces Python 2.7.15rc1
and when running python3 -V it produces Python 3.7.2
You could see the paths of python versions on my OS from this picture here is the screeshot
but when running pip install package-name or pip3 install package-name it installs the package in python3.6,
Now as all the packages installed on python3.6, I want to run my programs in terminal on python3.6 not Python 2.7.15rc1 or Python 3.7.2
as in the picture
My problem is:
when I run python filename.py, it interpreted on Python 2.7.15rc1 so it produces an error that says package not found, and the same when running python3 filename.py it interpreted on Python 3.7.2 and it produces an error that says package not found
Now I want to set Python3.6 to be the default interpreter when I run a program in the terminal because it has all the packages installed to it!
python python3
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
I have three versions of python on ubuntu 18.04
when running python -V in terminal it produces Python 2.7.15rc1
and when running python3 -V it produces Python 3.7.2
You could see the paths of python versions on my OS from this picture here is the screeshot
but when running pip install package-name or pip3 install package-name it installs the package in python3.6,
Now as all the packages installed on python3.6, I want to run my programs in terminal on python3.6 not Python 2.7.15rc1 or Python 3.7.2
as in the picture
My problem is:
when I run python filename.py, it interpreted on Python 2.7.15rc1 so it produces an error that says package not found, and the same when running python3 filename.py it interpreted on Python 3.7.2 and it produces an error that says package not found
Now I want to set Python3.6 to be the default interpreter when I run a program in the terminal because it has all the packages installed to it!
python python3
python python3
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
edited Apr 17 at 12:57
Mustafa Abdullah
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
asked Apr 17 at 12:40
Mustafa AbdullahMustafa Abdullah
62 bronze badges
62 bronze badges
Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41
add a comment
|
Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41
Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41
Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41
add a comment
|
1 Answer
1
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votes
On your system /usr/bin/python3 is likely a link to /usr/bin/python3.7 and can be changed to be /usr/bin/python3.6. You will also find that /usr/bin/python is a link to /usr/bin/python2.7×
The link for python3 can be changed to be /usr/bin/python3.6 but making python itself default to python3 is fraught with peril, because your system may have scripts written for python v2(*) with a #! /usr/bin/python shebang and changing python to be a python V3 interpreter will break them.
Another solution is to define a shell alias (in .bashrc)
alias python3=/usr/bin/python3.6
alias python=/usr/bin/python3.6
The good thing about this solution is that it only changes the meaning of python for interactive shells, in scripts the aliases are ignored and you still use the default python interpreter and so won't break anything.
(*) Find them with:
find /usr/ -type f -executable -exec grep -E -l '#!.+python[^3]' ;
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
On your system /usr/bin/python3 is likely a link to /usr/bin/python3.7 and can be changed to be /usr/bin/python3.6. You will also find that /usr/bin/python is a link to /usr/bin/python2.7×
The link for python3 can be changed to be /usr/bin/python3.6 but making python itself default to python3 is fraught with peril, because your system may have scripts written for python v2(*) with a #! /usr/bin/python shebang and changing python to be a python V3 interpreter will break them.
Another solution is to define a shell alias (in .bashrc)
alias python3=/usr/bin/python3.6
alias python=/usr/bin/python3.6
The good thing about this solution is that it only changes the meaning of python for interactive shells, in scripts the aliases are ignored and you still use the default python interpreter and so won't break anything.
(*) Find them with:
find /usr/ -type f -executable -exec grep -E -l '#!.+python[^3]' ;
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
add a comment
|
On your system /usr/bin/python3 is likely a link to /usr/bin/python3.7 and can be changed to be /usr/bin/python3.6. You will also find that /usr/bin/python is a link to /usr/bin/python2.7×
The link for python3 can be changed to be /usr/bin/python3.6 but making python itself default to python3 is fraught with peril, because your system may have scripts written for python v2(*) with a #! /usr/bin/python shebang and changing python to be a python V3 interpreter will break them.
Another solution is to define a shell alias (in .bashrc)
alias python3=/usr/bin/python3.6
alias python=/usr/bin/python3.6
The good thing about this solution is that it only changes the meaning of python for interactive shells, in scripts the aliases are ignored and you still use the default python interpreter and so won't break anything.
(*) Find them with:
find /usr/ -type f -executable -exec grep -E -l '#!.+python[^3]' ;
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
add a comment
|
On your system /usr/bin/python3 is likely a link to /usr/bin/python3.7 and can be changed to be /usr/bin/python3.6. You will also find that /usr/bin/python is a link to /usr/bin/python2.7×
The link for python3 can be changed to be /usr/bin/python3.6 but making python itself default to python3 is fraught with peril, because your system may have scripts written for python v2(*) with a #! /usr/bin/python shebang and changing python to be a python V3 interpreter will break them.
Another solution is to define a shell alias (in .bashrc)
alias python3=/usr/bin/python3.6
alias python=/usr/bin/python3.6
The good thing about this solution is that it only changes the meaning of python for interactive shells, in scripts the aliases are ignored and you still use the default python interpreter and so won't break anything.
(*) Find them with:
find /usr/ -type f -executable -exec grep -E -l '#!.+python[^3]' ;
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
On your system /usr/bin/python3 is likely a link to /usr/bin/python3.7 and can be changed to be /usr/bin/python3.6. You will also find that /usr/bin/python is a link to /usr/bin/python2.7×
The link for python3 can be changed to be /usr/bin/python3.6 but making python itself default to python3 is fraught with peril, because your system may have scripts written for python v2(*) with a #! /usr/bin/python shebang and changing python to be a python V3 interpreter will break them.
Another solution is to define a shell alias (in .bashrc)
alias python3=/usr/bin/python3.6
alias python=/usr/bin/python3.6
The good thing about this solution is that it only changes the meaning of python for interactive shells, in scripts the aliases are ignored and you still use the default python interpreter and so won't break anything.
(*) Find them with:
find /usr/ -type f -executable -exec grep -E -l '#!.+python[^3]' ;
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
answered Apr 17 at 15:06
xenoidxenoid
2,6701 gold badge6 silver badges18 bronze badges
2,6701 gold badge6 silver badges18 bronze badges
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Are you setting the header on the file.py? #!/usr/bin/env python Header thread
– Ricardo
Apr 17 at 14:41