zip

snippets/zip.md

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+### zip
+
+Creates a list of elements, grouped based on the position in the original lists.
+
+Use `max` combined with `list comprehension` to get the length of the longest list in the arguments. Loops for `max_length` times grouping elements. If lengths of `lists` vary `fill_value` is used. By default `fill_value` is `None`.
+
+```python 
+
+
+def zip(*args, fillvalue=None):
+    max_length = max([len(arr) for arr in args])
+    result = []
+    for i in range(max_length):
+        result.append([args[k][i] if i < len(args[k])
+                       else None for k in range(len(args))])
+    return result
+
+```
+
+``` python
+zip(['a', 'b'], [1, 2], [True, False]); // [['a', 1, True], ['b', 2, False]]
+zip(['a'], [1, 2], [True, False]); // [['a', 1, True], [None, 2, False]]
+zip(['a'], [1, 2], [True, False], fill_value = '_'); // [['a', 1, True], ['_', 2, False]]
+```