Nov 13, 2016 · Let's say I have a standard Python string (such as one obtained from raw_input()), maybe "2 + 2" for simplicity's sake. I'd like to convert this string to standard math operations in …

Also the type of the variable parameter is a string. In this context, as I can't imagine a case where usage of boolean operators on strings would make sense, I want to ask the question: Why would one want …

Feb 12, 2022 · a = ['red dwarf', 'smart cat'] b = ['red car', 'black hole', 'cat'] [[f(x,y) for x in a] for y in b] in a more efficient way. What options are actually available for a general (custom) Python function f pre …

May 10, 2016 · Yes, in your case *1 string concatenation requires all characters to be copied, this is a O (N+M) operation (where N and M are the sizes of the input strings). M appends of the same word will …

May 11, 2021 · 1 How can be done with Python to reorder a string applying the math operations order with parenthesys? Let me use an example: "son(father(granpa)mother))" ===> "granpa father mother …

Mar 5, 2018 · Starting from numpy 1.4, if one needs arrays of strings, it is recommended to use arrays of dtype object_, string_ or unicode_, and use the free functions in the numpy.char module for fast …

Aug 20, 2014 · I don't know about bitwise operations on strings but the struct worked great for me. Here's the use case. The SGF file format exists for recording certain games. In the case of Go, …

Aug 1, 2013 · Python is already really good at handling string processing The other (and really, the main) reason numpy doesn't try to offer string operations is that python is already really good at it.

Jul 21, 2022 · The point of eval() is to execute Python code that is stored as a string. If the user is inputting values to be used within an eval() statement, you should absolutely do some error-checking …

Mar 3, 2022 · I'm using pandas version 1.3.3. It seems I am only able to use builtin python functions, such as the max function, to aggregate columns that contain strings. Trying to do the same thing …