add repr to proc

procs.py

@@ -79,6 +79,9 @@ class Process(object):
         return Chain([self, other])
 
 
+    def __repr__(self):
+        return '<Process: {command}>'.format(command=self.command)
+
 
 class Chain(object):
 

tests/test_process.py

@@ -7,6 +7,10 @@ TEST_DIR = os.path.abspath(os.path.join(
     os.path.dirname(os.path.abspath(__file__)), 'test_data'
 ))
 
+def tests_repr():
+    p = Process('foo')
+    assert repr(p) == '<Process: foo>'
+
 
 def test_single_proc():
     ls = Process('ls {test_dir}'.format(test_dir=TEST_DIR))