Joining lists<\/strong> means combining two or more lists into one list<\/strong>.<\/p>\n This is useful when:<\/p>\n You have data in different lists<\/p>\n<\/li>\n You want them together in one list<\/p>\n<\/li>\n<\/ul>\n The easiest way to join lists is using new_list = list1 + list2 Output:<\/p>\n \ud83d\udc49 This creates a new list<\/strong>.<\/p>\n fruits.extend(more_fruits) \ud83d\udc49 This changes the first list<\/strong>.<\/p>\n You can join lists manually using a loop.<\/p>\n for<\/span> item in<\/span> list2: print<\/span>(list1) result = a + b + c Lists can store mixed data.<\/p>\n joined = numbers + words Result:<\/p>\n \u2714 Correct:<\/p>\n \u274c students = class1 + class2 nums1.extend(nums2) for<\/span> color in<\/span> b: print<\/span>(a) \u2714 This chapter is ideal for:<\/p>\n Python beginner books<\/p>\n<\/li>\n School & college students<\/p>\n<\/li>\n Self-learners<\/p>\n<\/li>\n<\/ul>\n If you want next, I can write:<\/p>\n Tuple Basics<\/strong><\/p>\n<\/li>\n Set Basics<\/strong><\/p>\n<\/li>\n Dictionary Basics<\/strong><\/p>\n<\/li>\n List Exercises<\/strong><\/p>\n<\/li>\n MCQs with answers<\/strong><\/p>\n<\/li>\n<\/ul>\n Just tell me \ud83d\ude0a<\/p>\n","protected":false},"excerpt":{"rendered":" 1. What Does \u201cJoin Lists\u201d Mean? Joining lists means combining two or more lists into one list. This is useful when: You have data in different lists You want them together in one list...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-2447","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/posts\/2447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/comments?post=2447"}],"version-history":[{"count":1,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/posts\/2447\/revisions"}],"predecessor-version":[{"id":2448,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/posts\/2447\/revisions\/2448"}],"wp:attachment":[{"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/media?parent=2447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/categories?post=2447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo.materiamedica.net\/demo6\/wp-json\/wp\/v2\/tags?post=2447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
2. Join Lists Using
+<\/code> Operator<\/h2>\n+<\/code>.<\/p>\nExample<\/h3>\n
list1 = [1<\/span>, 2<\/span>, 3<\/span>]
\nlist2 = [4<\/span>, 5<\/span>, 6<\/span>]<\/p>\n
\nprint<\/span>(new_list)
\n<\/code><\/div>\n<\/div>\n[1, 2, 3, 4, 5, 6]
\n<\/code><\/div>\n<\/div>\n3. Join Lists Using
extend()<\/code><\/h2>\nextend()<\/code> adds items of one list to the end of another list<\/strong>.<\/p>\nExample<\/h3>\n
fruits = [\"apple\"<\/span>, \"banana\"<\/span>]
\nmore_fruits = [\"orange\"<\/span>, \"grape\"<\/span>]<\/p>\n
\nprint<\/span>(fruits)
\n<\/code><\/div>\n<\/div>\n4. Join Lists Using Loop<\/h2>\n
Example<\/h3>\n
list1 = [10<\/span>, 20<\/span>]
\nlist2 = [30<\/span>, 40<\/span>]<\/p>\n
\n list1.append(item)<\/p>\n
\n<\/code><\/div>\n<\/div>\n5. Join Multiple Lists<\/h2>\n
Example<\/h3>\n
a = [1<\/span>, 2<\/span>]
\nb = [3<\/span>, 4<\/span>]
\nc = [5<\/span>, 6<\/span>]<\/p>\n
\nprint<\/span>(result)
\n<\/code><\/div>\n<\/div>\n6. Join Lists with Different Data Types<\/h2>\n
Example<\/h3>\n
numbers = [1<\/span>, 2<\/span>]
\nwords = [\"one\"<\/span>, \"two\"<\/span>]<\/p>\n
\nprint<\/span>(joined)
\n<\/code><\/div>\n<\/div>\n7. Common Beginner Mistakes<\/h2>\n
\u274c Using
append()<\/code> Instead of extend()<\/code><\/h3>\nlist1.append(list2)
\n<\/code><\/div>\n<\/div>\n[1, 2, [3, 4]]
\n<\/code><\/div>\n<\/div>\nlist1.extend(list2)
\n<\/code><\/div>\n<\/div>\n\u274c Expecting
extend()<\/code> to return list<\/h3>\nnew_list = list1.extend(list2)
\n<\/code><\/div>\n<\/div>\nextend()<\/code> returns None<\/code>.<\/p>\n8. Simple Practice Examples<\/h2>\n
Example 1: Join Student Names<\/h3>\n
class1 = [\"Amit\"<\/span>, \"Ravi\"<\/span>]
\nclass2 = [\"Sita\"<\/span>, \"Gita\"<\/span>]<\/p>\n
\nprint<\/span>(students)
\n<\/code><\/div>\n<\/div>\nExample 2: Join Numbers<\/h3>\n
nums1 = [1<\/span>, 2<\/span>]
\nnums2 = [3<\/span>, 4<\/span>]<\/p>\n
\nprint<\/span>(nums1)
\n<\/code><\/div>\n<\/div>\nExample 3: Join Using Loop<\/h3>\n
a = [\"red\"<\/span>]
\nb = [\"blue\"<\/span>, \"green\"<\/span>]<\/p>\n
\n a.append(color)<\/p>\n
\n<\/code><\/div>\n<\/div>\n9. Summary (Join Lists)<\/h2>\n
+<\/code> creates new list
\u2714 extend()<\/code> adds to existing list
\u2714 Loop method also works
\u2714 Avoid append()<\/code> for joining lists<\/p>\n\ud83d\udcd8 Perfect for Beginner eBook<\/h3>\n
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