diff --git a/bin/euscan b/bin/euscan
index ecf9c51..6c3502e 100755
--- a/bin/euscan
+++ b/bin/euscan
@@ -29,8 +29,8 @@ from portage.exception import AmbiguousPackageName
 from portage.output import green, turquoise, white, yellow
 
 from euscan import CONFIG, output
-from euscan.out import progress_bar
 from euscan._version import __version__
+from euscan.out import progress_bar
 
 # Globals
 isatty = os.environ.get("TERM") != "dumb" and sys.stdout.isatty()
@@ -75,7 +75,7 @@ def print_usage(_error=None, help=None):
     if _error:
         out = sys.stderr
 
-    if not _error in (
+    if _error not in (
         "global-options",
         "packages",
     ):
@@ -284,7 +284,7 @@ def parse_args():
     # apply getopts to command line, show partial help on failure
     try:
         opts, args = getopt.getopt(sys.argv[1:], short_opts, long_opts)
-    except:
+    except getopt.GetoptError:
         raise ParseArgsException(opts_mode + "-options")
 
     # set options accordingly
diff --git a/bin/euscan_patch_metadata b/bin/euscan_patch_metadata
index cd67f76..21cd3de 100755
--- a/bin/euscan_patch_metadata
+++ b/bin/euscan_patch_metadata
@@ -127,7 +127,7 @@ def get_deb_url(name):
 
         if not deb_url:
             logger.error("  Cannot get package from %s" % url)
-            name = raw_input("  Package name in Debian: ")
+            name = input("  Package name in Debian: ")
 
     return deb_url, deb_type
 
diff --git a/src/euscan/__init__.py b/src/euscan/__init__.py
index 7b9ac92..3fcdf2b 100644
--- a/src/euscan/__init__.py
+++ b/src/euscan/__init__.py
@@ -84,6 +84,6 @@ ROBOTS_TXT_BLACKLIST_DOMAINS = [
     "(.*)festvox\.org(.*)",
 ]
 
-from euscan.out import EuscanOutput
+from euscan.out import EuscanOutput  # noqa: E402
 
 output = EuscanOutput(CONFIG)
diff --git a/src/euscan/handlers/cpan.py b/src/euscan/handlers/cpan.py
index fbd82b6..42dfc28 100644
--- a/src/euscan/handlers/cpan.py
+++ b/src/euscan/handlers/cpan.py
@@ -27,8 +27,10 @@ def guess_package(cp, url):
     if match:
         pkg = match.group(1)
         try:
+            # Output is None if input is invalid, therefore TypeError when
+            # this None is attempted to be unpacked into three variables.
             cp, ver, rev = portage.pkgsplit("fake/" + pkg)
-        except:
+        except TypeError:
             pass
 
     cat, pkg = cp.split("/")
@@ -92,7 +94,7 @@ def cpan_mangle_version(pv):
 def cpan_vercmp(cp, a, b):
     try:
         return float(a) - float(b)
-    except:
+    except OverflowError:
         return helpers.simple_vercmp(a, b)
 
 
@@ -113,7 +115,7 @@ def scan_pkg(pkg, options):
         options["versionmangle"] = ["cpan", "gentoo"]
 
     url = "http://search.cpan.org/api/dist/%s" % remote_pkg
-    cp, ver, rev = pkg.cp, pkg.version, pkg.revision
+    cp, ver = pkg.cp, pkg.version
     m_ver = cpan_mangle_version(ver)
 
     output.einfo("Using CPAN API: " + url)
diff --git a/src/euscan/handlers/php.py b/src/euscan/handlers/php.py
index e931375..4546b13 100644
--- a/src/euscan/handlers/php.py
+++ b/src/euscan/handlers/php.py
@@ -4,8 +4,6 @@ import urllib.parse
 import urllib.request
 import xml.dom.minidom
 
-import portage
-
 from euscan import helpers, mangling, output
 
 HANDLER_NAME = "php"
@@ -35,7 +33,7 @@ def scan_url(pkg, url, options):
 
 
 def scan_pkg(pkg, options):
-    cp, ver, rev = pkg.cp, pkg.version, pkg.revision
+    cp, ver = pkg.cp, pkg.version
 
     package = options["data"]
     channel = options["type"]
diff --git a/src/euscan/helpers.py b/src/euscan/helpers.py
index 8339d51..ab6e374 100644
--- a/src/euscan/helpers.py
+++ b/src/euscan/helpers.py
@@ -1,20 +1,16 @@
 import errno
 import os
 import re
+import urllib
 import urllib.error
 import urllib.parse
 import urllib.request
+import urllib.robotparser
 from xml.dom.minidom import Document
 
 import portage
 from portage import dep
 
-try:
-    from urllib import robotparser, urlparse
-except ImportError:
-    import urllib.robotparser
-    import urllib.parse
-
 import euscan
 from euscan import BLACKLIST_VERSIONS, CONFIG, ROBOTS_TXT_BLACKLIST_DOMAINS
 from euscan.version import parse_version
@@ -188,7 +184,9 @@ def join_version(components):
         version += str(components[i])
         if i >= len(components) - 1:
             break
-        if type(components[i]) != str and type(components[i + 1]) != str:
+        if not isinstance(components[i], str) and not isinstance(
+            components[i + 1], str
+        ):
             version += "."
     return version
 
@@ -200,10 +198,10 @@ def increment_version(components, level):
         raise Exception
 
     for i in range(n, level + 1, -1):
-        if type(components[i - 1]) == int:
+        if isinstance(components[i - 1], int):
             components[i - 1] = 0
 
-    if type(components[level]) == int:
+    if isinstance(components[level], int):
         components[level] += 1
 
     return components
@@ -278,7 +276,7 @@ def urlallowed(url):
         try:
             rp.read()
             rpcache[baseurl] = rp
-        except:
+        except IOError:
             rp = None
 
         setdefaulttimeout(timeout)
diff --git a/src/euscan/out.py b/src/euscan/out.py
index bb40346..32ed3d0 100644
--- a/src/euscan/out.py
+++ b/src/euscan/out.py
@@ -69,7 +69,7 @@ def progress_bar():
 
 
 def clean_colors(string):
-    if type(string) is str:
+    if isinstance(string, str):
         string = re.sub("\033\[[0-9;]+m", "", string)
         string = re.sub(r"\\u001b\[[0-9;]+m", "", string)
         string = re.sub(r"\x1b\[[0-9;]+m", "", string)