This works fine, but when I try to initialize a Disease with three optional values, or with the optional value in the middle (ie nicknames), it doesn’t work. Is there any way around these issues? Answer To make a value sometimes optional, you either have to pull it from *labs or **inheritance, or provide a default value such as: Now,
Tag: object
Datetime object in DataFrame with just time
This is the plain column And the I would like to put that column in the index, the problem is when I try to use the method resample() I always get the same problem: TypeError: Only valid with DatetimeIndex, TimedeltaIndex or PeriodIndex, but got an instance of ‘Index’ I’ve been using this to change the Time column to Answer You
Remove all elements of a string list in python if they contain a given phrase
Have a list called summary containing a corresponding JSON object similar to: Essentially, if “tables_data”: “” is found within the string of a list item, I want the entire list item to be removed. How would I go about doing this? Answer You can do a dictionary-comprehension selecting the dictionary item with ‘tables_data’ has a value not equals ”:
Convert String (with other string in) in Date Object – Python
I’m trying to convert this French string : ’20 avril 2018 – Arrivée définitive’ as a Date Object. I tried : But I have this error : Thank you in advance for your help. I’m hoping that this will help someone. Answer As you can read in documentation The parse function returns datetime representing parsed date if successful, else returns
Why is `object` an instance of `type` and `type` an instance of `object`?
I am a little bit confused about the object and type classes in Python 3. Maybe someone can clear up my confusion or provide some additional information. My current understanding is that every class (except object) inherits from a base class called object. But every class (including object) is also an instance of the class type, which is an instance
Elegant way to check if a nested key exists in a dict?
Is there are more readable way to check if a key buried in a dict exists without checking each level independently? Lets say I need to get this value in a object buried (example taken from Wikidata): To make sure that this does not end with a runtime error it is necessary to either check every level like so: The
How to copy all attributes of one Python object to another?
I’ve got two classes, of which one inherits from the other: I now create a Parent and change the attributes: And from this point, I want to create a Child in which I want to copy all the attributes from the parent. I can of course do this like so: The thing is that while developing, this class will grow
How to convert a nested Python dict to object?
I’m searching for an elegant way to get data using attribute access on a dict with some nested dicts and lists (i.e. javascript-style object syntax). For example: Should be accessible in this way: I think, this is not possible without recursion, but what would be a nice way to get an object style for dicts? Answer Update: In Python 2.6
Python dictionary from an object’s fields
Do you know if there is a built-in function to build a dictionary from an arbitrary object? I’d like to do something like this: NOTE: It should not include methods. Only fields. Answer Note that best practice in Python 2.7 is to use new-style classes (not needed with Python 3), i.e. Also, there’s a difference between an ‘object’ and a