update rst readme, remove unused import

pbincli/actions.py

@@ -76,7 +76,7 @@ def get(args, api_client):
 
     try:
         pasteid, passphrase = args.pasteinfo.split("#")
-    except:
+    except ValueError:
         print("PBinCLI error: provided info hasn't contain valid PasteID#Passphrase string")
         exit(1)
 

pbincli/api.py

@@ -19,7 +19,7 @@ class PrivateBin:
 
         try:
             return result.json()
-        except:
+        except ValueError:
             print("ERROR: Unable parse response as json. Received (size = {}):\n{}".format(len(result.text), result.text))
             exit(1)
 
@@ -40,7 +40,7 @@ class PrivateBin:
                 headers = self.headers,
                 proxies = self.proxy,
                 data = request).json()
-        except:
+        except ValueError:
             # unable parse response as json because it can be empty (1.2), so simulate correct answer
             print("NOTICE: Received empty response. We interpret that as our paste has already been deleted.")
             from json import loads as json_loads

pbincli/format.py

@@ -186,7 +186,6 @@ class Paste:
                 self._attachment = cipher_message['attachment']
                 self._attachment_name = cipher_message['attachment_name']
         else:
-            from hashlib import sha256
             from sjcl import SJCL
 
             password = self.__preparePassKey()