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2. How do I append one string to another in Python?

   stackoverflow.com/questions/4435169

   When you concatenate strings using the + operator, Python will call the __add__ method on the string on the left side passing the right side string as a parameter. – Addie Commented Dec 5, 2015 at 20:10

3. What is the most efficient string concatenation method in Python...

   stackoverflow.com/questions/1316887

   The main question is, does it a) create a copy of the string for concatenation (similar to s = s + 'abc'), which requires O(n) runtime, or b) simply append to the existing string without creating a copy, which requires O(1)?

4. python - inserting characters at the start and end of a string -...

   stackoverflow.com/questions/10059554

   15. If you want to insert other string somewhere else in existing string, you may use selection method below. Calling character on second position: >>> s = "0123456789">>> s[2]'2'. Calling range with start and end position: >>> s[4:6]'45'. Calling part of a string before that position:

5. python - How to concatenate (join) items in a list to a single...

   stackoverflow.com/questions/12453580

   So, range based for loop in this example , when the python reach the last word of your list, it should'nt add "-" to your concenated_string. If its not last word of your string always append "-" string to your concenated_string variable.

6. python - How do I pad a string with zeros? - Stack Overflow

   stackoverflow.com/questions/339007

   What is the most pythonic way to pad a numeric string with zeroes to the left, i.e., so the numeric string has a specific length? str.zfill is specifically intended to do this: >>> '1'.zfill(4) '0001' Note that it is specifically intended to handle numeric strings as requested, and moves a + or -to the beginning of the string:

7. How to append to bytes in python 3 - Stack Overflow

   stackoverflow.com/questions/27001419

   First of all passing an integer (say n) to bytes() simply returns an bytes string of n length with null bytes. So, that's not what you want here: Either you can do: >>> bytes([5]) #This will work only for range 0-256. b'\x05'. Or: >>> bytes(chr(5), 'ascii') b'\x05'. As @simonzack already mentioned, bytes are immutable, so to update (or better ...

8. Which is the preferred way to concatenate a string in Python?

   stackoverflow.com/questions/12169839

   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 Python 2.3 as well.

9. Appending the same string to a list of strings in Python

   stackoverflow.com/questions/2050637

   I am trying to take one string, and append it to every string contained in a list, and then have a new list with the completed strings. Example: list1 = ['foo', 'fob', 'faz', 'funk'] string = 'bar' *magic* list2 = ['foobar', 'fobbar', 'fazbar', 'funkbar'] I tried for loops, and an attempt at list comprehension, but it was garbage.

10. python - How do I append to a file? - Stack Overflow

    stackoverflow.com/questions/4706499

    Open takes 2 arguments, the file that we want to open and a string that represents the kinds of permission or operation we want to do on the file here is file mode options Mode Description 'r' This is the default mode.

11. python - Insert variable values into a string - Stack Overflow

    stackoverflow.com/questions/3367288

    See Format String Syntax for a description of the various formatting options that can be specified in format strings. This method of string formatting is the new standard in Python 3.0, and should be preferred to the % formatting described in String Formatting Operations in new code. New in version 2.6.