The OP asked for Python 2.4 but about version 2.7, Hatem Nassrat has tested (July 2013) three concatenation techniques where + is faster when concatenating less than 15 strings but he recommends the other techniques: joinand %. (this current comment is just to confirm the @tonfa's comment above).

Sep 17, 2012 · @Wouter, it will not. On the one hand, only lists of strings can be joined; so list.join would be inappropriate for an arbitrary list. On the other, the argument of str.join can be any "iterable" sequence of strings, not just a list.

The speed can be contrasted with the fastest method for Python 2, which is + concatenation on my computer; and that takes 0.203 µs with 8-bit strings, and 0.259 µs if the strings are all Unicode.

I want to apply some sort of concatenation of the strings in a column using groupby. This is my code so far: import pandas as pd from io import StringIO data = StringIO(""" "na...

Aug 29, 2012 · But on 2.4 it isn't anymore (or at least Python 2.4.7), so the recommendation to use append/join became outdated in 2008, when Python 2.3 stopped being updated, and you should have stopped using it. :-) (Update: Turns out when I did the testing more carefully that using + and += is faster for two strings on

Jan 26, 2010 · Unless you've got a very very very good reason to concatenate strings using + or operator.add (the most frequent one, that you've got few, fixed number of strings), you should use always join. Just because each + generates a new string which is the concatenation of two strings, unlike join that only generates one final string. So, imagine you ...

Aug 18, 2012 · To print strings and numbers in Python, is there any other way than doing something like: first = 10 second = 20 print "First number is %(first)d and second number is %(second)d" % {"first": first, "

Bytes don't work quite like strings. When you index with a single value (rather than a slice), you get an integer, rather than a length-one bytes instance. In your case, a[0] is 20 (hex 0x14). A similar issue happens with the bytes constructor.

To anyone else stumbling across this question, you can use \ to concatenate a Path object and str. Use path.Path for paths compatible with both Unix and Windows (you can use it the same way as I've used pathlib.PureWindowsPath). The only reason I'm using pathlib.PureWindowsPath is that the question asked specifically about Windows paths. For ...

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.