![]() ![]() Very good approach to test behaviour, but not very maintainable or shareable. Result: You override all other choices by cherry-picking your Python binary. You change, for this specific execution, which binary will be using (the Python interpreter ignores the shebang, because it is a comment). [Credit to is the simplest approach: $ /path/to/your/python/bin/python2.7 my_script.py if there is an incompatibility, it is at the script level). ![]() But, in any case, you are putting the semantic in the file, which makes sense in many cases (e.g. Result: Well, it depends whether you use the env binary or not. In addition to that, keep in mind that if you plan to use virtual environments, using /usr/bin/env python is advisable (if I'm not mistaken). ![]() You can, for instance, choose #!/usr/bin/env python2 to force some Python 2.x flavour, but maybe the specific binary will change from user to user. This gives some power to the user (when setting the PATH). Note that if the PATH is not correctly set, this won't work. A similar approach would be to use full specification of version but without path: #!/usr/bin/env python2.7 The problem would be if you want it to be portable. You can use python, python2 or python2.7 and you will be more or less specific in the version. The idea is using the full path in the first line of the python source file: #!/usr/bin/python2.7 [Credit to "shebang" approach, modifying the first line. But some sheband will behave differently. bashrc file will use, by default, the interpreter of choice. Will use the interpreter of choice (the one forced at the. Or executions like $ python name_of_script.py This kind of file will be unaffected of your changes. Problem is if you are relying on the "shebang" of the file: #!/usr/bin/python bashrc file in order to change the path and/or add an alias. Credit to basic approach would be to change the. This will happen in the whole system, for all users. Result: Once you do this, everything that uses " python" will use the python2.7 binary. ![]() Specifically, use $ update-alternatives -config python [Credit to the update-alternatives feature of the system. There are different ways to achieve that, it depends on at what level the decision is taken. sys.version and python_version to check the Python version.Sorry for "stealing" answers, but I feel that there is a little bit of chaos here. In this article, we learned to use a simple command python -version to check the version of Python on any Python script whether it is an editor, interpreter, or a command line. Sys.version_info(major=3, minor=5, micro=2, releaselevel='final', serial=0) Use platform module to check Python version from platform import python_version Use sys module to check Python version import sys As discussed above 3 is the major version, 5 is the minor version and 2 is the micro version. In all the three version checks, you will an output somewhat like Python 3.5.2. If you are using a macOS, check the Python version by entering the given command in the terminal: python –version To check the version installed, open Windows Powershell or any Python editor, and enter the given command: python ––version However, it is always a good practice to check the version. Most out-of-the-box Windows installations do not come with Python pre-installed. To check the version installed, open the Linux terminal window and enter the given command: python ––version Most modern Linux distributions come with Python pre-installed. Let us look over the commands to check the Python version. So if you are looking for all the versions of python3 then you just need to run whereis python3 command and you will able to see all the python3versions as shown below. When looking at the version number, there are usually three digits to read: The first method you can think of using is through whereis command which is easily available in almost all the linux distributions. There are different versions of Python, but the two most popular ones are Python 2 and Python 3. The python script is a simple code that can be run in different modes such as using a Python interpreter, on a command line, or using any Python editor. Python uses version keywords to check the Python version. After Python or any installation, one should check the version of the software that is running the script. Like much other software, Python too has several different versions released to date. To run a python script, we need a python interpreter that needs to be downloaded and installed. The file containing the python script has the extension ‘.py’ or can also have the extension ‘.pyw’ if it is being run on a windows machine. The Python script is basically a file containing code written in Python. Python is a well known high-level programming language. Let's first have a quick look over what is a Python script. In this article, we will learn the command to check the version of Python using Python script. ![]()
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