Fix #63: Strip leading 0 in exponent part

toml.py

@@ -786,7 +786,7 @@ def _dump_value(v):
         unicode: lambda: _dump_str(v),
         list: lambda: _dump_list(v),
         bool: lambda: str(v).lower(),
-        float: lambda: str(v),
+        float: lambda: _dump_float(v),
         datetime.datetime: lambda: v.isoformat()[:19]+'Z',
     }
     # Lookup function corresponding to v's type
@@ -794,9 +794,6 @@ def _dump_value(v):
     # Evaluate function (if it exists) else return v
     return dump_fn() if dump_fn is not None else v
 
-
-
-
 def _dump_str(v):
     v = "%r" % v
     if v[0] == 'u':
@@ -809,7 +806,6 @@ def _dump_str(v):
     v = v.replace("\\x", "\\u00")
     return str('"'+v+'"')
 
-
 def _dump_list(v):
     t = []
     retval = "["
@@ -826,3 +822,6 @@ def _dump_list(v):
         t = s
     retval += "]"
     return retval
+
+def _dump_float(v):
+    return "{0:.16g}".format(v).replace("e+0", "e+").replace("e-0", "e-")