diff --git a/.meta/mksnap.py b/.meta/mksnap.py
index e06c17613..1b70416f5 100644
--- a/.meta/mksnap.py
+++ b/.meta/mksnap.py
@@ -5,7 +5,7 @@
 import sys
 from io import open as io_open
 from os import path
-from subprocess import check_output
+from subprocess import check_output  # nosec
 
 sys.path.insert(1, path.dirname(path.dirname(__file__)))
 import tqdm  # NOQA
@@ -65,7 +65,7 @@
     command: bin/tqdm
     completer: completion.sh
 """.format(version=tqdm.__version__, commit=check_output([
-    'git', 'describe', '--always']).decode('U8').strip())
+    'git', 'describe', '--always']).decode('U8').strip())  # nosec
 fname = path.join(path.dirname(src_dir), 'snapcraft.yaml')
 
 if __name__ == "__main__":
diff --git a/examples/7zx.py b/examples/7zx.py
index 892dcf764..c5bc28b7e 100644
--- a/examples/7zx.py
+++ b/examples/7zx.py
@@ -25,7 +25,7 @@
 import os
 import pty
 import re
-import subprocess
+import subprocess  # nosec
 
 from argopt import argopt
 
@@ -51,7 +51,7 @@ def main():
     # Get compressed sizes
     zips = {}
     for fn in args.zipfiles:
-        info = subprocess.check_output(["7z", "l", fn]).strip()
+        info = subprocess.check_output(["7z", "l", fn]).strip()  # nosec
         finfo = RE_SCN.findall(info)  # size|compressed|name
 
         # builtin test: last line should be total sizes
@@ -81,7 +81,7 @@ def main():
                 cmd7zx + [fn],
                 bufsize=1,
                 stdout=md,  # subprocess.PIPE,
-                stderr=subprocess.STDOUT)
+                stderr=subprocess.STDOUT)  # nosec
             os.close(sd)
             with io.open(md, mode="rU", buffering=1) as m:
                 with tqdm(total=sum(fcomp.values()), disable=len(zips) < 2,
diff --git a/examples/parallel_bars.py b/examples/parallel_bars.py
index 2e8a9c3b8..498fd61df 100644
--- a/examples/parallel_bars.py
+++ b/examples/parallel_bars.py
@@ -16,7 +16,7 @@
 
 
 def progresser(n, auto_position=True, write_safe=False, blocking=True, progress=False):
-    interval = random() * 0.002 / (NUM_SUBITERS - n + 2)
+    interval = random() * 0.002 / (NUM_SUBITERS - n + 2)  # nosec
     total = 5000
     text = "#{0}, est. {1:<04.2}s".format(n, interval * total)
     for _ in trange(total, desc=text, disable=not progress,
diff --git a/examples/tqdm_wget.py b/examples/tqdm_wget.py
index 3cd5e7404..8663e5a39 100644
--- a/examples/tqdm_wget.py
+++ b/examples/tqdm_wget.py
@@ -100,12 +100,12 @@ def update_to(self, b=1, bsize=1, tsize=None):
 #                        reporthook=my_hook(t), data=None)
 with TqdmUpTo(unit='B', unit_scale=True, unit_divisor=1024, miniters=1,
               desc=eg_file) as t:  # all optional kwargs
-    urllib.urlretrieve(eg_link, filename=eg_out, reporthook=t.update_to,
-                       data=None)
+    urllib.urlretrieve(  # nosec
+        eg_link, filename=eg_out, reporthook=t.update_to, data=None)
     t.total = t.n
 
 # Even simpler progress by wrapping the output file's `write()`
-response = urllib.urlopen(eg_link)
+response = urllib.urlopen(eg_link)  # nosec
 with tqdm.wrapattr(open(eg_out, "wb"), "write",
                    miniters=1, desc=eg_file,
                    total=getattr(response, 'length', None)) as fout:
diff --git a/tests/tests_main.py b/tests/tests_main.py
index 44d0b7878..aa477e5b5 100644
--- a/tests/tests_main.py
+++ b/tests/tests_main.py
@@ -1,6 +1,6 @@
 """Test CLI usage."""
 import logging
-import subprocess
+import subprocess  # nosec
 import sys
 from functools import wraps
 from os import linesep
@@ -34,11 +34,11 @@ def norm(bytestr):
 @mark.slow
 def test_pipes():
     """Test command line pipes"""
-    ls_out = subprocess.check_output(['ls'])
-    ls = subprocess.Popen(['ls'], stdout=subprocess.PIPE)
+    ls_out = subprocess.check_output(['ls'])  # nosec
+    ls = subprocess.Popen(['ls'], stdout=subprocess.PIPE)  # nosec
     res = subprocess.Popen(
         [sys.executable, '-c', 'from tqdm.cli import main; main()'],
-        stdin=ls.stdout, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        stdin=ls.stdout, stdout=subprocess.PIPE, stderr=subprocess.PIPE)  # nosec
     out, err = res.communicate()
     assert ls.poll() == 0
 
diff --git a/tqdm/auto.py b/tqdm/auto.py
index 370c180d6..28bc722da 100644
--- a/tqdm/auto.py
+++ b/tqdm/auto.py
@@ -30,7 +30,7 @@
     from .std import tqdm as std_tqdm
 
     if notebook_tqdm != std_tqdm:
-        class tqdm(notebook_tqdm, asyncio_tqdm):
+        class tqdm(notebook_tqdm, asyncio_tqdm):  # pylint: disable=inconsistent-mro
             pass
     else:
         tqdm = asyncio_tqdm
diff --git a/tqdm/cli.py b/tqdm/cli.py
index 7b7338458..b5a16142b 100644
--- a/tqdm/cli.py
+++ b/tqdm/cli.py
@@ -263,7 +263,7 @@ def cp(src, dst):
             stdout_write = stdout.write
             fp_write = getattr(fp, 'buffer', fp).write
 
-            class stdout(object):
+            class stdout(object):  # pylint: disable=function-redefined
                 @staticmethod
                 def write(x):
                     with tqdm.external_write_mode(file=fp):
diff --git a/tqdm/utils.py b/tqdm/utils.py
index 96c710f86..aae87e454 100644
--- a/tqdm/utils.py
+++ b/tqdm/utils.py
@@ -3,7 +3,6 @@
 """
 import os
 import re
-import subprocess
 import sys
 from functools import wraps
 from warnings import warn
@@ -254,7 +253,7 @@ def _screen_shape_windows(fp):  # pragma: no cover
             (_bufx, _bufy, _curx, _cury, _wattr, left, top, right, bottom,
              _maxx, _maxy) = struct.unpack("hhhhHhhhhhh", csbi.raw)
             return right - left, bottom - top  # +1
-    except Exception:
+    except Exception:  # nosec
         pass
     return None, None
 
@@ -263,9 +262,10 @@ def _screen_shape_tput(*_):  # pragma: no cover
     """cygwin xterm (windows)"""
     try:
         import shlex
-        return [int(subprocess.check_call(shlex.split('tput ' + i))) - 1
+        from subprocess import check_call  # nosec
+        return [int(check_call(shlex.split('tput ' + i))) - 1
                 for i in ('cols', 'lines')]
-    except Exception:
+    except Exception:  # nosec
         pass
     return None, None