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snippets/python/s/merge-dictionaries.md

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+---
+title: Merge dictionaries
+type: snippet
+language: python
+tags: [dictionary]
+cover: plant-candle
+dateModified: 2020-11-02T19:28:27+02:00
+---
+
+Merges two or more dictionaries.
+
+- Create a new `dict` and loop over `dicts`, using `dictionary.update()` to add the key-value pairs from each one to the result.
+
+```py
+def merge_dictionaries(*dicts):
+  res = dict()
+  for d in dicts:
+    res.update(d)
+  return res
+```
+
+```py
+ages_one = {
+  'Peter': 10,
+  'Isabel': 11,
+}
+ages_two = {
+  'Anna': 9
+}
+merge_dictionaries(ages_one, ages_two)
+# { 'Peter': 10, 'Isabel': 11, 'Anna': 9 }
+```