Differences

This shows you the differences between two versions of the page.

--- python_lists [2023/05/01 15:50] – [read file as list of strings] admin
+++ python_lists [2023/11/07 21:46] – [read file as list of strings] admin
@@ Line 1: / Line 1: @@
 ===== dummy =====
 ==== tasks ====
+  * [[check if two lists are equal]]
   * [[get unique items in a list]]
   * [[convert a string to a list]]
+==== search one list in another ====
+<code>
+>>> letters = [i for i in 'abcdefghijklmnopqrstuvwxyz']
+>>> letters
+['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
+>>> name = [i for i in 'kamaraju']
+>>> name
+['k', 'a', 'm', 'a', 'r', 'a', 'j', 'u']
+>>> indices = [letters.index(i) for i in name]
+>>> indices
+[10, 0, 12, 0, 17, 0, 9, 20]
+>>> rebuilt_name = [letters[i] for i in indices]
+>>> rebuilt_name
+['k', 'a', 'm', 'a', 'r', 'a', 'j', 'u']
+</code>
 ==== read file as list of strings ====
@@ Line 11: / Line 28: @@
 </code>
+==== Check if a variable is a list ====
+<code>
+% python
+Python 3.11.4 (main, Jul  5 2023, 13:45:01) [GCC 11.2.0] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>> isinstance(['foo'], list)
+True
+>>> isinstance('foo', list)
+False
+</code>