This question already has answers here:
Is it possible to access original function which has been overwritten in python [duplicate]
(3 answers)
Closed 4 months ago.
I'm doing maintenance on a huge file that follows like this
...stuff
def open(account):
...do stuff
...stuff
However I need to write a str to a txt, so I was gonna do the following
with open(filename,"a") as file:
file.write(mystr)
and this is calling the open(account) method, which is being used in a lot of classes, so renaming is not an option, how can I call the open method from the built-in functions from python and not the one with the same name?
You can do __builtins__.open().
Related
This question already has answers here:
What do ellipsis [...] mean in a list?
(5 answers)
Closed 2 years ago.
I've run into this unseen list object, when I tried to play with list append, and I've searched hard but unable to find much information. So this is what's happening:
L = ['dinosaur']
L.append(('theropoda', L))
print(L)
# ['dinosaur', ('theropoda', [...])]
Questions - what's the [...] means here? Thanks.
As mentioned in the comments, Python will not attempt to include a circular/recursive reference in the representation of a list.
It would appear that the __repr__ function (also used by lists to create the string for printing) is implemented via reprlib with recursive support. Without it, you would end up with a RecursionError as to output the list, Python must include the nested version of the list, which also needs the nested version, and so on. Instead, it outputs the special value of ... which indicates to you that it is a recursive reference.
This question already has answers here:
How to import everything exported from a file with ES2015 syntax? Is there a wildcard?
(5 answers)
Closed 4 years ago.
Is there anyway not to write this:
import {replace_in_mtstr, tot_width, rationalize, eval_expression, ascii_to_latex, latex_to_ascii, getIndicesOf, cleanIndices, change_sign, exponentiate, multiply_grouped_nodes, flip_fraction, add_brackets, are_of_type, any_of_type, have_same_ancestors, have_same_type, have_same_text, have_single_factor, have_same_denom, are_same_terms, get_prev, get_next, get_all_next, has_op, parse_mtstr, parse_poly, prepare} from "./functions";
in ES6? These are all the exported functions in a different file. The closes thing I know is import * as object from 'file';. However, I want to have the functions available directly, not inside an object. Is this possible in ES6?
As the comments indicate, this is not possible.
This question already has answers here:
How to use string.replace() in python 3.x
(9 answers)
Closed 5 years ago.
I am trying to write a program that replaces every 'a' for '&'.I am currently stumped and was wondering if someone could write it for me to get an idea of what it would look like. Thanks.
strw = "kabhi kabhi mery dil main khyaal aata hy"
print (strw.replace("a", "&"))
This question already has answers here:
How to pass all arguments passed to my Bash script to a function of mine? [duplicate]
(7 answers)
Closed 5 years ago.
I need to create a function and pass an argument like
myfunc word_100
and then the output should display
word_101
Basically it should increment taking in account the delimiter. I am thinking to say put word as one variable and the number and increment the number and combine it together. But not sure how to go about.
Try:
NAME=${1%_*}_
NUM=${1##*_}
echo $NAME`expr $NUM + 1`
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Annoying PHP error: “Strict Standards: Only variables should be passed by reference in”
I have this line of code,
$extension=end(explode(".", $srcName));
when I fun my function I get
PHP Strict Standards: Only variables should be passed by reference in
I am not sure how to solve this
The function end() requires a variable to be passed-by-reference and passing the return-value of a function doesn't acheive this. You'll need to use two lines to accomplish this:
$exploded = explode(".", $srcName);
$extension = end($exploded);
If you're simply trying to get a file-extension, you could also use substr() and strrpos() to do it in one line:
$extension = substr($srcName, strrpos($srcName, '.'));
Or, if you know the number of .'s that appear in the string, say it's only 1, you can use list() (but this won't work if there is a dynamic number of .'s:
list(,$extension) = explode('.', $srcName);