What is the difference between py and pyc files in Python. Hi, Team, Can anyone tell me What is the difference between. Your comment on this question: Your name to display optional : Email me at this address if a comment is added after mine: Email me if a comment is added after mine Privacy: Your email address will only be used for sending these notifications. Your answer Your name to display optional : Email me at this address if my answer is selected or commented on: Email me if my answer is selected or commented on Privacy: Your email address will only be used for sending these notifications.
Hi, Roshni, You can follow a few steps given below:. We get bytecode after compilation of. It is only created for the files that you import. Before executing a python program python interpreter checks for the compiled files. If the file is present, the virtual machine executes it.
Python for example, compile source code to bytcode [usually found as. A confusion might occur because of the third stage, that's converting bytcode to machine code. Often this is done using a software called a virtual machine. The confusion occurs because a virtual machine acts like a machine, but it's actually not!
Virtual machines are introduced for portability, having a VM on any REAL machine will allow us to execute the same source code. The approach used in most VMs [that's the third stage] is compiling, thus some people would say it's a compiled language. For the importance of VMs, we often say that such languages are both compiled and interpreted.
Python code goes through 2 stages. First step compiles the code into. Then this. Please refer to this link. Here process of code compilation and execution is explained in easy terms. Machines don't understand English or any other languages, they understand only byte code, which they have to be compiled e.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. If Python is interpreted, what are. Ask Question. Asked 11 years, 5 months ago. Active 3 months ago. Viewed k times. Where do these come in? Improve this question. Arsen Khachaturyan 6, 4 4 gold badges 35 35 silver badges 37 37 bronze badges. See stackoverflow. In one word: speed. GregSchmit You're right that this question is not the duplicate, but MrBultitude is correct that the timing is irrelevant.
The general rule is to keep the question with the best collection of answers, and close the other one as a duplicate. Does it mean that even python has that 'Write once, run anywhere' just like Java.? Python is no different; it's "run anywhere you have a Python virtual machine". The big difference is that most Python implementations combine the compiler and the interpreter into one executable, rather than separating them like java and javac. Add a comment. Active Oldest Votes. Improve this answer.
Alex Martelli Alex Martelli k gold badges silver badges bronze badges. Beautiful answer. Just a small correction to the last paragraph: Python is designed to compile as fast as possible etc.
This time it really is the language, with its lack of static type system and stuff. When people talk about "interpreted" languages, they usually mean "dynamic" languages. Elazar, actually, other implementations of Python, such as PyPy, which are in no hurry to compile, manage to do the more thorough analysis required by the lack of static typing and produce just-in-time compilation to machine code thus speeding up long-running programs by many times.
Where does Cython fit in here? Would you consider it a different language or is it a Python implementation? Also, is this meme of "interpreted" vs compiled perhaps just a terminology confusion because Python's VM is often referred to as its "interpreter"? It would be just as valid to call the JVM or the. NET runtime interpreters. The simple syntax tree contains nodes mirroring the source. It contains just the nodes representing the source in a simple way.
If there is no appropriate. If the Python standard import logic finds an appropriate. Of course, the first import of a new file is a little bit slower — besides parsing with ANTLR, the Python standard library import logic serializes the resulting code object to a.
When a Python source file module is imported during an execution for the first time, the appropriate. If the same module is imported again, then the already created. That means that there are no. The creation of. Every subsequent execution of a script will reuse the already existing.
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