Issue#53. Changed default min_weight_magnitude to 9 for testnet and 15 for mainnet.

Author: johngrantuk

.gitignore

@@ -19,3 +19,8 @@ dist/*
 # you can add these to your own "global" .gitignore file.
 # https://help.github.com/articles/ignoring-files/#create-a-global-gitignore
 #
+# Environments
+.env
+.venv
+env/
+venv/

iota/api.py

@@ -133,7 +133,7 @@ def default_min_weight_magnitude(self):
     Returns the default ``min_weight_magnitude`` value to use for API
     requests.
     """
-    return 13 if self.testnet else 18
+    return 9 if self.testnet else 15
 
   def add_neighbors(self, uris):
     # type: (Iterable[Text]) -> dict
@@ -879,4 +879,4 @@ def send_trytes(self, trytes, depth, min_weight_magnitude=None):
       trytes              = trytes,
       depth               = depth,
       minWeightMagnitude  = min_weight_magnitude,
-    )
+    )