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Full Discussion: Python Concatenating 2 Lists
Top Forums Programming Python Concatenating 2 Lists Post 302932336 by totoro125 on Tuesday 20th of January 2015 09:19:44 PM
Old 01-20-2015
Python Concatenating 2 Lists

I am just trying to concatenate two lists together, but I am not sure what is wrong with my code, it won't run. Thank you for any help.

Code:
#!/usr/bin/python
# Takes two lists and returns a list that is the concatenation of both of
# them.

A = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
B = [11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
def list_concat( A, B):

   print(A)
   print(B)
   A.extend(B)
   print(A)

 

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concat(1T)						       Tcl Built-In Commands							concat(1T)

__________________________________________________________________________________________________________________________________________________

NAME
concat - Join lists together SYNOPSIS
concat ?arg arg ...? _________________________________________________________________ DESCRIPTION
This command joins each of its arguments together with spaces after trimming leading and trailing white-space from each of them. If all the arguments are lists, this has the same effect as concatenating them into a single list. It permits any number of arguments; if no args are supplied, the result is an empty string. EXAMPLES
Although concat will concatenate lists (so the command: concat a b {c d e} {f {g h}} will return "a b c d e f {g h}" as its result), it will also concatenate things that are not lists, and hence the command: concat " a b {c " d " e} f" will return "a b {c d e} f" as its result. Note that the concatenation does not remove spaces from the middle of its arguments, so the command: concat "a b c" { d e f } will return "a b c d e f" (i.e. with three spaces between the a, the b and the c). SEE ALSO
append(1T), eval(1T) KEYWORDS
concatenate, join, lists ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl 8.3 concat(1T)
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