I have code from this Question: Why is Python’s eval() rejecting this multiline string, and how can I fix it? When I use this code: The result is: I am expecting this: How can I change the code? I tried to change the code, but I was not successful. Answer The code you’ve posted sorts the ast tree …
Tag: exec
Execute f-string in function
I have a and want to replace all tokens starting with with a new token I wrote a function: If I execute the lines separately it works. But the function itself doesn’t work. I’d expect How can I “exec” f-string in a function? Answer You are overcomplicating this. Simply reassign x: But …
Beginner to python or programming as a whole, getting this error and unable to solve it
Here is the code: here is the error: Answer Python’s eval() allows you to evaluate arbitrary Python expressions from a string-based or compiled-code-based input. However, as the comments correctly say, this is best avoided. All you need to do from here is convert strings to integers. This would work bet…
Syntax error calling Python from C with fork-execv
I want to call a Python script as a child process from a C program using fork and execv. I have tested it calling bin/ls and it works: So I changed the C code to call the Create_Buffer() function in this Python file: The Python script has two functions; I want to call Create_Buffer(), so I changed my C file
python assign attribute names and his values with a dictionary passed to the class
The normal way to pass a variable to a class atrubte is as follows: It is a convention to call the variable inside the init the same as the attribute. I could have done: Now imagine I would like to pass to the init method a dictionary with the name of the attributes and the values they should take. I
async exec in python
I’d like to call exec in an async function and do something like the following code (which is not valid): More precisely, I’d like to be able to wait for a future inside the code that runs in exec. How can this be achieved? Answer Note: F-strings are only supported in python 3.6+. For older versio…
Python3 exec, why returns None?
When the code below this text, and returns the result None why? Result: Module code exx.py: Answer The problem of course is not only that print returns None, it is that exec returns None, always. If you’d need the return value, you’d use eval: after which you’d notice that print still return…