How to concatenate strings in python? For example: Section = 'C_type' Concatenate it with Sec_ to form the string: Sec_C_type See also: How do I put a variable’s value inside a string (interpolate...

Is there an efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)? I found following methods here: Simple concatenation using + Using a string lis...

Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. For the opposite process - creating a list from a string - see How do I split a string into a list of characters? or How do I split a string into a list of words? as appropriate.

Sep 24, 2016 · Concatenation of strings have the disadvantage of needing to create a new string and allocate new memory for every concatenation! This is time consuming, but isn't that big of a deal with few and small strings. When you know the number of strings to concatenate and don't need more than maybe 2-4 concatenations I'd go for it.

How to concatenate a fixed string and a variable in Python [duplicate] Asked 11 years, 11 months ago Modified 3 years, 4 months ago Viewed 331k times

Apr 23, 2020 · At the time of asking this question, I'm using Python 3.8 When I say efficient, I'm only referring to the speed at which the strings are concatenated, or in more technical terms: I'm asking about ...

Sep 17, 2013 · Statement 3 doesn't work as when you concatenate two string expressions to create a new string you need a '+' operator. whereas in case of sting 1,2 and 4, adjacent literals separated by white spaces use different quoting conventions.Hence they are allowed making them print same as their concatenation.

Nov 23, 2011 · Doing this naively in a loop can be very bad for performance (as in, quadratic slowdown = add one string, need twice the same; it's not a good habit to get into).

Dec 16, 2015 · As of Python 3.6 you can use so-called "formatted strings" (or "f strings") to easily insert variables into your strings. Just add an f in front of the string and write the variable inside curly braces ({}) like so:

Using timeit in Python 3.8.0, I get that concatenation using an f-string is consistently slower than +, but the percentage difference is small for longer strings: