How can I understand symbols used in arguments of methods in Python Documentation? Question: I am finding it difficult to understand Python Documentation. So, there are going to be multiple questions in this question. for e.g.: >>> help(str) . . . center(self, width, fillchar=’ ‘, /) … count(…) S.count(sub[, start[, end]]) -> int … . …
Passing data between a series of related functions Question: I am attempting to create an exam grading program. I successfully wrote each function to do what I need it to, but when I attempt to execute the entire program, I am running into issues with my return variables not being referenced. Here is my code …
PyCharm. Unexpected argument(s) Possible callees Question: I write in PyCharm and get a bug (in line "func(dict_data)"): Unexpected argument(s) Possible callees: A.foo(dict_data: dict) A.bar(dict_data: dict). Is it a PyCharm bug or am I doing something wrong? PyCharm 2020.3 class A: def __init__(self): self.functions = { "foo": self.foo, "bar": self.bar } def typing(self, dict_data: dict): for …
Function don't update the list realtime python Question: def func(a,b): a=a.append(b) if a is not None: for i in a: print(i) li=[1,2,3] def testcall(): c=10 func(li,c) if __name__==’__main__’: test() Why it is not printing the updated list even though is I update the list in test function and then sent it, it’ll not print anything. …
TypeError: __init__() got an unexpected keyword argument 'choices' in python's argparser Question: import argparse parser = argparse.ArgumentParser() parser.add_argument(‘-u’, ‘–url’,help=’Passing one url’) parser.add_argument(‘-t’, ‘–type’, action=’store_true’,help=’To download pages/posts’, choices=[‘pages’, ‘posts’]) args = parser.parse_args() url = args.url if args.type == "pages": url_link = url + "/wp-json/wp/v2/pages/?per_page=100" if args.type == "posts": url_link = url + "/wp-json/wp/v2/posts/?per_page=100" If the user …
Is there any way to pass a block argument in Python without defining it as a function first? Question: in Ruby, a block argument works like this: def foo_bar (&block) block.(4) end foo_bar do |x| puts x puts x * 2 end =begin 4 8 =end I’ve seen the following equivalent in Python, but I …
Positional argument after optional argument list Question: I’m somewhat new to using argparse and have run into a problem stemming from using an optional argument (list of files arbitrarily long) along with a positional argument (a single file). Here is a simple program that demonstrates this problem: parser = argparse.ArgumentParser() parser.add_argument(“pos_file”, help=”Input file”) parser.add_argument(“-v”, “–verbose”, …
How do I specify multiple types for a parameter using type-hints? Question: I have a Python function which accepts XML data as an str. For convenience, the function also checks for xml.etree.ElementTree.Element and will automatically convert to str if necessary. import xml.etree.ElementTree as ET def post_xml(data: str): if type(data) is ET.Element: data = ET.tostring(data).decode() # …
Pass string as tuple as arguments python Question: If I have a string like: “spam, foo, moo” How would I pass that to a function so it would turn into: myFunction(“spam”, “moo”, “foo”) Asked By: gusg21 || Source Answers: You can split your string to list of things: your_string = “spam, foo, moo” your_function(*your_string.split(‘, ‘)) …
How to pass arguments to main function within Python module? Question: I have recently started learning more about Python Packages and Modules. I’m currently busy updating my existing modules so that that can be run as script or imported as a module into my other code. I’m not sure how to construct my input arguments …
