diff --git a/README.md b/README.md
index 44164e7..f106493 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ You can create config file with variables `server` and `proxy` in `~/.config/pbi
 
 Example contents:
 
-```
+```ini
 server=https://paste.i2pd.xyz/
 proxy=http://127.0.0.1:3128
 ```
diff --git a/README.rst b/README.rst
index f4daa75..34ee981 100644
--- a/README.rst
+++ b/README.rst
@@ -10,81 +10,74 @@
    :alt: GitHub tag
 
 
-.. image:: https://img.shields.io/github/release/r4sas/PBinCLI.svg
-   :target: https://github.com/r4sas/PBinCLI/releases/
-   :alt: GitHub release
+.. image:: https://api.codacy.com/project/badge/Grade/4f24f43356a84621bbd9078c4b3f1b70
+   :target: https://www.codacy.com/app/r4sas/PBinCLI?utm_source=github.com&utm_medium=referral&utm_content=r4sas/PBinCLI&utm_campaign=Badge_Grade
+   :alt: Codacy Badge
 
 
 PBinCLI
 =======
 
-`PrivateBin <https://github.com/PrivateBin/PrivateBin/>`_ CLI
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+PBinCLI is command line client for `PrivateBin <https://github.com/PrivateBin/PrivateBin/>`_ written on Python 3.
 
 Installing
 ----------
 
 .. code-block:: bash
 
-   $ virtualenv --python=python3 venv
-   $ . venv/bin/activate
-   $ pip install pbincli
+   virtualenv --python=python3 venv
+   . venv/bin/activate
+   pip install pbincli
 
 Usage
 -----
 
-By default pbincli configured to use https://paste.i2pd.xyz/ for sending and receiving pastes. No proxy used by default.
+By default pbincli configured to use ``https://paste.i2pd.xyz/`` for sending and receiving pastes. No proxy used by default.
 
 You can create config file with variables ``server`` and ``proxy`` in ``~/.config/pbincli/pbincli.conf`` to use different settings.
 
 Example contents:
 
-.. code-block::
+.. code-block:: ini
 
    server=https://paste.i2pd.xyz/
    proxy=http://127.0.0.1:3128
 
 Run inside ``venv`` command:
 
-.. code-block::
-
-   $ pbincli send --text "Hello!"
+.. code-block:: bash
 
+   pbincli send --text "Hello!"
 
 Or use stdin input to read text for paste:
 
-.. code-block::
+.. code-block:: bash
 
-   $ pbincli send - <<EOF
+   pbincli send - <<EOF
    Hello! This is test paste!
    EOF
 
-
 It will send string ``Hello! This is test paste!`` to PrivateBin.
 
 To send file use ``--file`` or ``-f`` with filename. Example:
 
-.. code-block::
-
-   $ pbincli send -c "My document" -f info.pdf
-
+.. code-block:: bash
 
+   pbincli send -c "My document" -f info.pdf
 
 To retrieve paste from server, use ``get`` command with paste info.
 
 It must be formated like ``pasteID#passphrase``. Example:
 
-.. code-block::
-
-   $ pbincli get 49eeb1326cfa9491#vfeortoVWaYeJlviDdhxQBtj5e0I2kArpynrtu/tnGs=
+.. code-block:: bash
 
+   pbincli get 49eeb1326cfa9491#vfeortoVWaYeJlviDdhxQBtj5e0I2kArpynrtu/tnGs=
 
 More info you can find by typing
 
-.. code-block::
-
-   $ pbincli [-h] {send, get, delete}
+.. code-block:: bash
 
+   pbincli [-h] {send, get, delete}
 
 TODO
 ----
diff --git a/pbincli/actions.py b/pbincli/actions.py
index 8240e4c..d37eabc 100644
--- a/pbincli/actions.py
+++ b/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)
 
diff --git a/pbincli/api.py b/pbincli/api.py
index 666dfeb..531a379 100644
--- a/pbincli/api.py
+++ b/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
diff --git a/pbincli/format.py b/pbincli/format.py
index f076282..5f674ed 100644
--- a/pbincli/format.py
+++ b/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()