diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000..0f34497
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,45 @@
+[flake8]
+
+# Don't even try to analyze these:
+exclude =
+  # No need to traverse egg files
+  *.egg,
+  # No need to traverse egg info dir
+  *.egg-info,
+  # No need to traverse eggs directory
+  .eggs,
+  # No need to traverse our git directory
+  .git,
+  # GitHub configs
+  .github,
+  # Cache files of MyPy
+  .mypy_cache,
+  # Cache files of pytest
+  .pytest_cache,
+  # Temp dir of pytest-testmon
+  .tmontmp,
+  # Countless third-party libs in venvs
+  .tox,
+  # Occasional virtualenv dir
+  .venv
+  # VS Code
+  .vscode,
+  # There's no value in checking cache directories
+  __pycache__,
+  # Temporary build dir
+  build,
+  # This contains sdists and wheels of ansible-lint that we don't want to check
+  dist,
+  # Occasional virtualenv dir
+  env,
+  # Metadata of `pip wheel` cmd is autogenerated
+  pip-wheel-metadata,
+
+# Let's not overcomplicate the code:
+max-complexity = 10
+
+# black
+max-line-length = 88
+
+# https://black.readthedocs.io/en/stable/the_black_code_style.html#line-length
+ignore = E203,E501,W503
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 542312c..531c1a5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,7 +12,7 @@ repos:
       - id: debug-statements
         language_version: python3
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.25.0
+    rev: v1.26.1
     hooks:
       - id: yamllint
         files: \.(yaml|yml)$
@@ -23,3 +23,24 @@ repos:
         files: src\/data\/queries\.yml$
         entry: >
           yamllint --strict -d "rules: { key-ordering: enable }"
+  - repo: https://github.com/pre-commit/mirrors-isort
+    rev: v5.8.0
+    hooks:
+      - id: isort
+        args:
+          # https://github.com/pre-commit/mirrors-isort/issues/9#issuecomment-624404082
+          - --filter-files
+  - repo: https://github.com/python/black.git
+    rev: 20.8b1
+    hooks:
+      - id: black
+        language_version: python3
+  - repo: https://github.com/pycqa/flake8.git
+    rev: 3.9.1
+    hooks:
+      - id: flake8
+        language_version: python3
+        additional_dependencies:
+          - flake8-2020>=1.6.0
+          - flake8-docstrings>=1.5.0
+          - flake8-pytest-style>=1.2.2
diff --git a/output/queries-schema.json b/output/queries-schema.json
index e459a70..895014e 100644
--- a/output/queries-schema.json
+++ b/output/queries-schema.json
@@ -1,5 +1,6 @@
 {
   "title": "Queries",
+  "description": "Queries Model.",
   "type": "object",
   "properties": {
     "queries": {
@@ -16,6 +17,7 @@
   "definitions": {
     "Query": {
       "title": "Query",
+      "description": "Query Model.",
       "type": "object",
       "properties": {
         "id": {
diff --git a/src/er-converter.py b/src/er-converter.py
index 6cb9ce8..0e45b7a 100644
--- a/src/er-converter.py
+++ b/src/er-converter.py
@@ -1,22 +1,23 @@
-import json
-import os
-import yaml
-import re
+"""Generate Elastic-Recheck compatible yaml files from human readable queries.
 
-"""
-This script generates Elastic-Recheck compatible yaml files from human readable queries.
-It takes 'pattern' and 'tags', both of which can be strings or lists, from input file and forms
-an elastic recheck query. This query is written in a file with filename same as the bug number if bug URL is provided
+It takes 'pattern' and 'tags', both of which can be strings or lists,
+from input file and forms an elastic recheck query. This query is written in a
+ file with filename same as the bug number if bug URL is provided
 or else the id from input file.
 
 input: src/data/queries.yml
 output: output/elastic-recheck/<id/bug_no>.yaml
 """
+import os
+
+import yaml
 
 dir_path = os.path.dirname(os.path.realpath(__file__))
 # Source and destination files
-queries_src = os.path.join(dir_path, 'data', 'queries.yml')
-elastic_recheck_dest_dir = os.path.join(os.path.dirname(dir_path), 'output', 'elastic-recheck')
+queries_src = os.path.join(dir_path, "data", "queries.yml")
+elastic_recheck_dest_dir = os.path.join(
+    os.path.dirname(dir_path), "output", "elastic-recheck"
+)
 # Make sure dest dir for er is present
 if not os.path.exists(elastic_recheck_dest_dir):
     os.makedirs(elastic_recheck_dest_dir)
@@ -24,14 +25,14 @@ if not os.path.exists(elastic_recheck_dest_dir):
 with open(queries_src) as in_file:
     queries_list = yaml.load(in_file, Loader=yaml.BaseLoader)
 
-for query_dict in queries_list['queries']:
+for query_dict in queries_list["queries"]:
     if "pattern" not in query_dict:
         continue
     # Assuming "pattern" is always present if it needs to be shown in ER
     suppress_graph = False  # default
-    message = ''
+    message = ""
     if "url" in query_dict:
-        out_filename = query_dict["url"].split('/')[-1] + ".yaml"
+        out_filename = query_dict["url"].split("/")[-1] + ".yaml"
     else:
         out_filename = query_dict["id"] + ".yaml"
     if isinstance(query_dict["pattern"], str):
@@ -44,15 +45,21 @@ for query_dict in queries_list['queries']:
         # message: "Remote call on"
         # AND
         # message: "failed"
-        message = ' AND '.join('message:"' + pattern + '"' for pattern in query_dict["pattern"])
-    if 'tags' in query_dict:
+        message = " AND ".join(
+            'message:"' + pattern + '"' for pattern in query_dict["pattern"]
+        )
+    if "tags" in query_dict:
         if isinstance(query_dict["tags"], str):
             message += "AND " + "tags:" + query_dict["tags"] + '"'
         elif isinstance(query_dict["tags"], list):
-            message += " AND (" + ' OR '.join('tags:"' + tags + '"' for tags in query_dict["tags"]) + ")"
-    if 'suppress-graph' in query_dict:
+            message += (
+                " AND ("
+                + " OR ".join('tags:"' + tags + '"' for tags in query_dict["tags"])
+                + ")"
+            )
+    if "suppress-graph" in query_dict:
         suppress_graph = bool(query_dict["suppress-graph"])
     er_query = {"query": message, "suppress-graph": suppress_graph}
 
-    with open(os.path.join(elastic_recheck_dest_dir, out_filename), 'w') as out_file:
+    with open(os.path.join(elastic_recheck_dest_dir, out_filename), "w") as out_file:
         yaml.dump(er_query, out_file, default_flow_style=False, width=88)
diff --git a/src/model.py b/src/model.py
index 24cd210..965f94d 100644
--- a/src/model.py
+++ b/src/model.py
@@ -1,10 +1,13 @@
+"""Models used for validation."""
 from pathlib import Path
 from typing import List, Optional, Union
 
-from pydantic import BaseModel, Field, Extra, HttpUrl
+from pydantic import BaseModel, Extra, Field, HttpUrl
 
 
 class Query(BaseModel):
+    """Query Model."""
+
     id: str
     name: Optional[str]
     pattern: Optional[Union[List[str], str]]
@@ -15,21 +18,26 @@ class Query(BaseModel):
     # elastic-search specific fields
     tags: Optional[Union[List[str], str]]
     suppress_graph: Optional[bool] = Field(
-        alias='suppress-graph',
-        description="Used for elastic-recheck")
+        alias="suppress-graph", description="Used for elastic-recheck"
+    )
 
     # artcl/sove specific fields
     regex: Optional[Union[List[str], str]]
     # https://opendev.org/openstack/ansible-role-collect-logs/src/branch/master/vars/sova-patterns.yml#L47
     multiline: Optional[bool] = False
     files: Optional[List[str]] = Field(
-        description="List of glob patterns, narrows down searching")
+        description="List of glob patterns, narrows down searching"
+    )
 
     class Config:
+        """Disalow unknown attributes."""
+
         extra = Extra.forbid
 
 
 class Queries(BaseModel):
+    """Queries Model."""
+
     queries: List[Query]
 
 
diff --git a/src/sova-converter.py b/src/sova-converter.py
index 8320058..69f7c2c 100644
--- a/src/sova-converter.py
+++ b/src/sova-converter.py
@@ -1,76 +1,65 @@
-import json
-import os
-import yaml
-import re
+"""Generates Sova compatible json file from human readable queries.
 
-"""
-This script generates Sova compatible json file from human readable queries.
-It takes 'regex' or if 'regex' is not available it converts 'pattern' to regex, from input file and forms
-sova compatible json file.
+It takes 'regex' or if 'regex' is not available it converts 'pattern' to regex,
+from input file and forms sova compatible json file.
 
 input: src/data/queries.yml
 output: output/sova-pattern-generated.json
 """
+import json
+import os
+import re
+
+import yaml
 
 dir_path = os.path.dirname(os.path.realpath(__file__))
 # Source and destination files
-queries_src = os.path.join(dir_path, 'data', 'queries.yml')
-sova_dest = os.path.join(os.path.dirname(dir_path), 'output', 'sova-pattern-generated.json')
+queries_src = os.path.join(dir_path, "data", "queries.yml")
+sova_dest = os.path.join(
+    os.path.dirname(dir_path), "output", "sova-pattern-generated.json"
+)
 
 with open(queries_src) as in_file:
     queries_list = yaml.load(in_file, Loader=yaml.BaseLoader)
 
 sova_regex_list = []
 sova_patterns_list = {"console": []}
-sova_dict = {
-    'regexes': sova_regex_list,
-    'patterns': sova_patterns_list
-}
+sova_dict = {"regexes": sova_regex_list, "patterns": sova_patterns_list}
 
-for query_dict in queries_list['queries']:
+for query_dict in queries_list["queries"]:
     regex_dict = {}
     regex_str = query_dict.get("regex", "")
 
-    if {'regex', 'pattern'} <= query_dict.keys():
+    if {"regex", "pattern"} <= query_dict.keys():
         # No pattern/regex conversion
-        regex_dict = {
-            "name": query_dict["id"],
-            "regex": query_dict["regex"]
-        }
-    elif 'regex' in query_dict:
-        regex_dict = {
-            "name": query_dict["id"],
-            "regex": query_dict["regex"]
-        }
-    elif 'pattern' in query_dict:
+        regex_dict = {"name": query_dict["id"], "regex": query_dict["regex"]}
+    elif "regex" in query_dict:
+        regex_dict = {"name": query_dict["id"], "regex": query_dict["regex"]}
+    elif "pattern" in query_dict:
         # Convert pattern to regex for Sova
         if isinstance(query_dict["pattern"], str):
             generated_regex = re.escape(query_dict["pattern"])
-            regex_dict = {
-                "name": query_dict["id"],
-                "regex": generated_regex
-            }
+            regex_dict = {"name": query_dict["id"], "regex": generated_regex}
             regex_str = generated_regex
         elif isinstance(query_dict["pattern"], list):
             generated_regex = []
             for item in query_dict["pattern"]:
                 generated_regex.append(re.escape(item))
-            regex_dict = {
-                "name": query_dict["id"],
-                "regex": generated_regex
-            }
+            regex_dict = {"name": query_dict["id"], "regex": generated_regex}
     sova_regex_list.append(regex_dict)
     patterns = sova_patterns_list.get("console", list())
     # if regex_str:
-    patterns.append({
-        "id": query_dict['id'],
-        "logstash": "",
-        "msg": query_dict['id'],
-        "pattern": regex_dict['name'],
-        "tag": "info"
-    })
+    patterns.append(
+        {
+            "id": query_dict["id"],
+            "logstash": "",
+            "msg": query_dict["id"],
+            "pattern": regex_dict["name"],
+            "tag": "info",
+        }
+    )
 
-with open(sova_dest, 'w') as out_file:
+with open(sova_dest, "w") as out_file:
     json.dump(sova_dict, out_file, indent=4, sort_keys=True)
     # Adds newline to pass lint
     out_file.write("\n")