How to check all the installed Python versions on Windows?
Please note I'm NOT asking "how to check which version of Python did I install".
I've installed several versions of Pythons on my Windows computer, for example Python 2.7-64, python 2.7-32, Python 3.7-32.
Python 3 includes "py" and "pyw" which helps me to easily start different Pythons, for example:
- "py -2.7" starts Python 2.7-64
- "py -2.7-32" starts Python 2.7-32
- "py -3.7-32" starts Python 3.7-32
What I'm wondering is, how to check how many different versions of Python did I install on my Windows PC and what versions are they?
PyCharm is able to find it but, for one thing, I don't know if it is a complete list, for another, I wonder if there is any tool provided by Python or the operating system can do it.
python
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
add a comment |
Please note I'm NOT asking "how to check which version of Python did I install".
I've installed several versions of Pythons on my Windows computer, for example Python 2.7-64, python 2.7-32, Python 3.7-32.
Python 3 includes "py" and "pyw" which helps me to easily start different Pythons, for example:
- "py -2.7" starts Python 2.7-64
- "py -2.7-32" starts Python 2.7-32
- "py -3.7-32" starts Python 3.7-32
What I'm wondering is, how to check how many different versions of Python did I install on my Windows PC and what versions are they?
PyCharm is able to find it but, for one thing, I don't know if it is a complete list, for another, I wonder if there is any tool provided by Python or the operating system can do it.
python
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56
add a comment |
Please note I'm NOT asking "how to check which version of Python did I install".
I've installed several versions of Pythons on my Windows computer, for example Python 2.7-64, python 2.7-32, Python 3.7-32.
Python 3 includes "py" and "pyw" which helps me to easily start different Pythons, for example:
- "py -2.7" starts Python 2.7-64
- "py -2.7-32" starts Python 2.7-32
- "py -3.7-32" starts Python 3.7-32
What I'm wondering is, how to check how many different versions of Python did I install on my Windows PC and what versions are they?
PyCharm is able to find it but, for one thing, I don't know if it is a complete list, for another, I wonder if there is any tool provided by Python or the operating system can do it.
python
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
Please note I'm NOT asking "how to check which version of Python did I install".
I've installed several versions of Pythons on my Windows computer, for example Python 2.7-64, python 2.7-32, Python 3.7-32.
Python 3 includes "py" and "pyw" which helps me to easily start different Pythons, for example:
- "py -2.7" starts Python 2.7-64
- "py -2.7-32" starts Python 2.7-32
- "py -3.7-32" starts Python 3.7-32
What I'm wondering is, how to check how many different versions of Python did I install on my Windows PC and what versions are they?
PyCharm is able to find it but, for one thing, I don't know if it is a complete list, for another, I wonder if there is any tool provided by Python or the operating system can do it.
python
python
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
asked Nov 15 '18 at 4:49
Columbia RoverColumbia Rover
179110
179110
If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56
add a comment |
If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56
If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56
add a comment |
1 Answer
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I just got the answer. By typing "py -h" or "py --help" I got the help message:
C:Usersadmin>py -h
Python Launcher for Windows Version 3.7.1150.1013
usage:
py [launcher-args] [python-args] script [script-args]
Launcher arguments:
-2 : Launch the latest Python 2.x version
-3 : Launch the latest Python 3.x version
-X.Y : Launch the specified Python version
The above all default to 64 bit if a matching 64 bit python is present.
-X.Y-32: Launch the specified 32bit Python version
-X-32 : Launch the latest 32bit Python X version
-X.Y-64: Launch the specified 64bit Python version
-X-64 : Launch the latest 64bit Python X version
-0 --list : List the available pythons
-0p --list-paths : List with paths
Which tells me that "-0" (zero, not letter "O") lists the available pythons:
C:Usersadmin>py -0
Installed Pythons found by py Launcher for Windows
-3.7-64 *
-3.7-32
-2.7-64
-2.7-32
While "-0p" lists not only the versions, but also the paths:
C:Usersadmin>py -0p
Installed Pythons found by py Launcher for Windows
-3.7-64 C:UsersadminAppDataLocalProgramsPythonPython37python.exe *
-3.7-32 C:UsersadminAppDataLocalProgramsPythonPython37-32python.exe
-2.7-64 C:Python27_64python.exe
-2.7-32 C:Python27_32python.exe
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
add a comment |
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I just got the answer. By typing "py -h" or "py --help" I got the help message:
C:Usersadmin>py -h
Python Launcher for Windows Version 3.7.1150.1013
usage:
py [launcher-args] [python-args] script [script-args]
Launcher arguments:
-2 : Launch the latest Python 2.x version
-3 : Launch the latest Python 3.x version
-X.Y : Launch the specified Python version
The above all default to 64 bit if a matching 64 bit python is present.
-X.Y-32: Launch the specified 32bit Python version
-X-32 : Launch the latest 32bit Python X version
-X.Y-64: Launch the specified 64bit Python version
-X-64 : Launch the latest 64bit Python X version
-0 --list : List the available pythons
-0p --list-paths : List with paths
Which tells me that "-0" (zero, not letter "O") lists the available pythons:
C:Usersadmin>py -0
Installed Pythons found by py Launcher for Windows
-3.7-64 *
-3.7-32
-2.7-64
-2.7-32
While "-0p" lists not only the versions, but also the paths:
C:Usersadmin>py -0p
Installed Pythons found by py Launcher for Windows
-3.7-64 C:UsersadminAppDataLocalProgramsPythonPython37python.exe *
-3.7-32 C:UsersadminAppDataLocalProgramsPythonPython37-32python.exe
-2.7-64 C:Python27_64python.exe
-2.7-32 C:Python27_32python.exe
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
add a comment |
I just got the answer. By typing "py -h" or "py --help" I got the help message:
C:Usersadmin>py -h
Python Launcher for Windows Version 3.7.1150.1013
usage:
py [launcher-args] [python-args] script [script-args]
Launcher arguments:
-2 : Launch the latest Python 2.x version
-3 : Launch the latest Python 3.x version
-X.Y : Launch the specified Python version
The above all default to 64 bit if a matching 64 bit python is present.
-X.Y-32: Launch the specified 32bit Python version
-X-32 : Launch the latest 32bit Python X version
-X.Y-64: Launch the specified 64bit Python version
-X-64 : Launch the latest 64bit Python X version
-0 --list : List the available pythons
-0p --list-paths : List with paths
Which tells me that "-0" (zero, not letter "O") lists the available pythons:
C:Usersadmin>py -0
Installed Pythons found by py Launcher for Windows
-3.7-64 *
-3.7-32
-2.7-64
-2.7-32
While "-0p" lists not only the versions, but also the paths:
C:Usersadmin>py -0p
Installed Pythons found by py Launcher for Windows
-3.7-64 C:UsersadminAppDataLocalProgramsPythonPython37python.exe *
-3.7-32 C:UsersadminAppDataLocalProgramsPythonPython37-32python.exe
-2.7-64 C:Python27_64python.exe
-2.7-32 C:Python27_32python.exe
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
add a comment |
I just got the answer. By typing "py -h" or "py --help" I got the help message:
C:Usersadmin>py -h
Python Launcher for Windows Version 3.7.1150.1013
usage:
py [launcher-args] [python-args] script [script-args]
Launcher arguments:
-2 : Launch the latest Python 2.x version
-3 : Launch the latest Python 3.x version
-X.Y : Launch the specified Python version
The above all default to 64 bit if a matching 64 bit python is present.
-X.Y-32: Launch the specified 32bit Python version
-X-32 : Launch the latest 32bit Python X version
-X.Y-64: Launch the specified 64bit Python version
-X-64 : Launch the latest 64bit Python X version
-0 --list : List the available pythons
-0p --list-paths : List with paths
Which tells me that "-0" (zero, not letter "O") lists the available pythons:
C:Usersadmin>py -0
Installed Pythons found by py Launcher for Windows
-3.7-64 *
-3.7-32
-2.7-64
-2.7-32
While "-0p" lists not only the versions, but also the paths:
C:Usersadmin>py -0p
Installed Pythons found by py Launcher for Windows
-3.7-64 C:UsersadminAppDataLocalProgramsPythonPython37python.exe *
-3.7-32 C:UsersadminAppDataLocalProgramsPythonPython37-32python.exe
-2.7-64 C:Python27_64python.exe
-2.7-32 C:Python27_32python.exe
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
I just got the answer. By typing "py -h" or "py --help" I got the help message:
C:Usersadmin>py -h
Python Launcher for Windows Version 3.7.1150.1013
usage:
py [launcher-args] [python-args] script [script-args]
Launcher arguments:
-2 : Launch the latest Python 2.x version
-3 : Launch the latest Python 3.x version
-X.Y : Launch the specified Python version
The above all default to 64 bit if a matching 64 bit python is present.
-X.Y-32: Launch the specified 32bit Python version
-X-32 : Launch the latest 32bit Python X version
-X.Y-64: Launch the specified 64bit Python version
-X-64 : Launch the latest 64bit Python X version
-0 --list : List the available pythons
-0p --list-paths : List with paths
Which tells me that "-0" (zero, not letter "O") lists the available pythons:
C:Usersadmin>py -0
Installed Pythons found by py Launcher for Windows
-3.7-64 *
-3.7-32
-2.7-64
-2.7-32
While "-0p" lists not only the versions, but also the paths:
C:Usersadmin>py -0p
Installed Pythons found by py Launcher for Windows
-3.7-64 C:UsersadminAppDataLocalProgramsPythonPython37python.exe *
-3.7-32 C:UsersadminAppDataLocalProgramsPythonPython37-32python.exe
-2.7-64 C:Python27_64python.exe
-2.7-32 C:Python27_32python.exe
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
answered Nov 16 '18 at 3:16
Columbia RoverColumbia Rover
179110
179110
add a comment |
add a comment |
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If you use conda to install the versions, type conda env list in your cmd. Link to conda doc
– Melvin
Nov 15 '18 at 4:55
What if you have a look at the list of installed programs ? You may have one entry for each python version.
– Patol75
Nov 15 '18 at 5:45
@Patol75 I'm using Microsoft Window 10. In my "Start" menu, for Python 3.7, it seems OK, I can see IDLE, Python 3.7, Python 3.7 Module Docs for both 32 and 64 bit. But for Python 2.7, there is only Python 2.7 32-bit in the menu. But I'm able to start Python 2.7 64-bit by running py -2.7-64. It means "py.exe" is able to find my 64-bit Python 2.7 version.
– Columbia Rover
Nov 15 '18 at 7:37
I was thinking of something like this (kencenerelli.wordpress.com/2017/11/25/…) or even just Apps & Features in Windows Settings.
– Patol75
Nov 15 '18 at 7:56