I would like to know how to format this case in a Pythonic way with f-strings: names = [‘Adam’, ‘Bob’, ‘Cyril’] text = f”Winners are:\n{‘\n’.join(names)}” print(text) The problem is that ‘\’ cannot be used inside the {…} expression portions of an f-string. Expected output: Winners are: Adam Bob Cyril 6 Answers 6
I notice that it is often suggested to use queues with multiple threads, instead of lists and .pop(). Is this because lists are not thread-safe, or for some other reason? 4 Answers 4
When I run pip freeze I see (among other expected packages) pkg-resources==0.0.0. I have seen a few posts mentioning this package (including this one), but none explaining what it is, or why it is included in the output of pip freeze. The main reason I am wondering is out of curiosity, but also, it seems … Read more
I was playing around in python. I used the following code in IDLE: p = [1, 2] p[1:1] = [p] print p The output was: [1, […], 2] What is this […]? Interestingly I could now use this as a list of list of list up to infinity i.e. p[1][1][1]…. I could write the above … Read more
I have a Python 2.7.11 installed on one of my LAB stations. I would like to upgrade Python to at least 3.5. How should I do that ? Should I prefer to completely uninstall 2.7.11 and than install the new one ? Is there a way to update it ? Is an update a good … Read more
I have problem with changing a dict value and saving the dict to a text file (the format must be same), I only want to change the member_phone field. My text file is the following format: memberID:member_name:member_email:member_phone and I split the text file with: mdict={} for line in file: x=line.split(‘:’) a=x[0] b=x[1] c=x[2] d=x[3] e=b+’:’+c+’:’+d … Read more
I have the following enum defined: from enum import Enum class D(Enum): x = 1 y = 2 print(D.x) now the printed value is D.x instead, I wanted the enum’s value to be print 1 What can be done to achieve this functionality? 5 Answers 5
I’m at wit’s end. After a dozen hours of troubleshooting, probably more, I thought I was finally in business, but then I got: Model class django.contrib.contenttypes.models.ContentType doesn’t declare an explicit app_label There is SO LITTLE info on this on the web, and no solution out there has resolved my issue. Any advice would be tremendously … Read more
When I meet the situation I can do it in javascript, I always think if there’s an foreach function it would be convenience. By foreach I mean the function which is described below: def foreach(fn,iterable): for x in iterable: fn(x) they just do it on every element and didn’t yield or return something,i think it … Read more
I’ve been trying to find out how to represent a maximum integer, and I’ve read to use “sys.maxint”. However, in Python 3 when I call it I get: AttributeError: module ‘object’ has no attribute ‘maxint’ 6 Answers 6
