1 files changed, 5 insertions, 0 deletions
diff --git a/progs/a537.py b/progs/a537.py
new file mode 100644
index 0000000..f1b2e6a
--- /dev/null
+++ b/progs/a537.py
@@ -0,0 +1,5 @@
+def group_keyvalue(l):
+    result = {}
+    for k, v in l:
+         result.setdefault(k, []).append(v)
+    return result
+\ No newline at end of file