list-comprehension

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if/else in a list comprehension

How开发者_开发问答 do I replace all the Nones with empty strings, and then call some function f?[详细]

2023-01-27 03:30 分类：问答
Erlang: List Comprehension to an Existing List

I am trying to create a new list via a list comprehension but want those new values to be included in an existing list.[详细]

2023-01-26 08:04 分类：问答
List comprehension rebinds names even after scope of comprehension. Is this right?

Comprehensions show unusual interactions with scoping. Is this the expected behavior? x = "original value"[详细]

2023-01-25 04:45 分类：问答
Python: create a list of dictionaries using a list comprehension

I have a list of dictionaries, and I want to use it to create another list of dictionaries, slightly amended.[详细]

2023-01-24 10:02 分类：问答
Eliminate dups and sum corresponding terms in lists

Given these 2开发者_JAVA技巧 lists L2 = [A,B,C,D,A,B] L3 = [3,2,1,2,2,1] I want to obtain L2_WANTED = [A,B,C,D][详细]

2023-01-23 19:52 分类：问答
How do I get a list of indices of non zero elements in a list?

I have a list that will always contain only ones and zeroes. I need to get a list of the non-zero indices of the list:[详细]

2023-01-23 13:50 分类：问答
Alternative to locals() in printing a table with a header

[Python 3.1] Edit: mistake in the original code. I need to print a table. The first row should be a header, which consists of column names separated by tabs. The following rows should contain the da[详细]

2023-01-23 02:56 分类：问答
Yet another list comprehension question

I had this: if Setting[\"Language\"] == \"en\": f.m_radioBox3.SetSelection(0) elif Setting[\"Language\"] == \"pt\":[详细]

2023-01-21 14:42 分类：问答
how to use python list comprehensions replace the function invoke inside of "for" stmt?

Sorry, I just found the id = [conn.cursor() for x in range(100) ] also works, so my concern will not be a problem anymore.[详细]

2023-01-20 22:14 分类：问答
Efficiently computing size of filtered list

I would like to efficiently compute the size of a filtered list, i.e., I don\'t want to keep the whole filtered list in memory, I just want to get its size. Is there a more \"pythonic\" way than compu[详细]

2023-01-20 18:58 分类：问答