Handle non-string bits in StringCommands.

Author: Fizzadar

pyinfra/api/command.py

@@ -2,6 +2,8 @@
 
 from string import Formatter
 
+import six
+
 from six.moves import shlex_quote
 
 from .operation_kwargs import get_executor_kwarg_keys
@@ -94,6 +96,9 @@ def _get_all_bits(self, bit_accessor):
             if quote:
                 bit = shlex_quote(bit)
 
+            if not isinstance(bit, six.string_types):
+                bit = '{0}'.format(bit)
+
             all_bits.append(bit)
 
         return all_bits