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From: Bruce Richardson <bruce.richardson@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 09/11] dpdk-pmdinfo: do not use len(x) to test for empty
Date: Mon, 7 Sep 2020 10:03:43 +0100
Message-ID: <20200907090342.GD312@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20200906013133.26360-10-stephen@networkplumber.org>

On Sat, Sep 05, 2020 at 06:31:31PM -0700, Stephen Hemminger wrote:
> This fixes the following python lint warnings.
> usertools/dpdk-pmdinfo.py:188:11: C1801: Do not use `len(SEQUENCE)` to determine if a sequence is empty (len-as-condition)
> usertools/dpdk-pmdinfo.py:196:21: C1801: Do not use `len(SEQUENCE)` to determine if a sequence is empty (len-as-condition)
> usertools/dpdk-pmdinfo.py:302:11: C1801: Do not use `len(SEQUENCE)` to determine if a sequence is empty (len-as-condition)
> 
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
>  usertools/dpdk-pmdinfo.py | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/usertools/dpdk-pmdinfo.py b/usertools/dpdk-pmdinfo.py
> index d746348f1415..632271e2f1d2 100755
> --- a/usertools/dpdk-pmdinfo.py
> +++ b/usertools/dpdk-pmdinfo.py
> @@ -185,7 +185,7 @@ def findDate(self, content):
>          return None
>  
>      def parse(self):
> -        if len(self.contents) < 1:
> +        if not len(self.contents):

Does an empty sequence not directly resolve to false in python? If so, the
len should be removable and just use "if not self.contents:"

>              print("data/%s-pci.ids not found" % self.date)
>          else:
>              vendorID = ""
> @@ -193,7 +193,7 @@ def parse(self):
>              for l in self.contents:
>                  if l[0] == "#":
>                      continue
> -                elif len(l.strip()) == 0:
> +                elif not l.strip():
>                      continue
>                  else:
>                      if l.find("\t\t") == 0:
> @@ -299,7 +299,7 @@ def parse_pmd_info_string(self, mystring):
>              except KeyError:
>                  continue
>  
> -        if len(pmdinfo["pci_ids"]) != 0:
> +        if pmdinfo["pci_ids"]:
>              print("PMD HW SUPPORT:")
>              if pcidb is not None:
>                  self.pretty_print_pmdinfo(pmdinfo)
> -- 
> 2.27.0
> 

  reply	other threads:[~2020-09-07  9:03 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-06  1:31 [dpdk-dev] [PATCH 00/11] Python script updates Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 01/11] cpu_layout: refactor to meet python standards Stephen Hemminger
2020-11-04  6:53   ` [dpdk-dev] [PATCH v2] " Stephen Hemminger
2020-11-04  9:21     ` Bruce Richardson
2020-11-04 16:22       ` Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 02/11] dpdk-pmdinfo: replace string.split with split Stephen Hemminger
2020-11-04  6:48   ` [dpdk-dev] [PATCH v2 0/7] dpdk-pmdinfo: python lint cleanups Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 1/7] dpdk-pmdinfo: replace string.split with split Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 2/7] dpdk-pmdinfo: replace io.open with open Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 3/7] dpdk-pmdinfo: remove unnecessary paren and else Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 4/7] dpdk-pmdinfo: replace is False and is True Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 5/7] dpdk-pmdinfo: fix indentation Stephen Hemminger
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 6/7] dpdk-pmdinfo: replace deprecated optparse with argparse Stephen Hemminger
2020-11-24  6:35       ` Jiang, YuX
2020-11-04  6:48     ` [dpdk-dev] [PATCH v2 7/7] dpdk-pmdinfo: do not use len(x) to test for empty Stephen Hemminger
2020-11-22 20:54     ` [dpdk-dev] [PATCH v2 0/7] dpdk-pmdinfo: python lint cleanups Thomas Monjalon
2020-09-06  1:31 ` [dpdk-dev] [PATCH 03/11] dpdk-pmdinfo: replace io.open with open Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 04/11] dpdk-pmdinfo: remove dead code Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 05/11] dpdk-pmdinfo: remove unnecessary paren and else Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 06/11] dpdk-pmdinfo: replace is False and is True Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 07/11] dpdk-pmdinfo: fix indentation Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 08/11] dpdk-pmdinfo: replace deprecated optparse with argparse Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 09/11] dpdk-pmdinfo: do not use len(x) to test for empty Stephen Hemminger
2020-09-07  9:03   ` Bruce Richardson [this message]
2020-09-07 17:20     ` Stephen Hemminger
2020-09-06  1:31 ` [dpdk-dev] [PATCH 10/11] dpdk-telemetry-client: fix some pylint warnings Stephen Hemminger
2020-09-07  9:05   ` Bruce Richardson
2020-11-04  7:00   ` [dpdk-dev] [PATCH v2] " Stephen Hemminger
2020-11-15 23:06     ` Thomas Monjalon
2020-09-06  1:31 ` [dpdk-dev] [PATCH 11/11] dpdk-devbind: use argparse instead of getopt Stephen Hemminger
2020-11-04  7:03   ` [dpdk-dev] [PATCH v2 0/6] dpdk-devbind: python lint cleanups Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 1/6] dpdk-devbind: use argparse instead of getopt Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 2/6] dpdk-devbind: fix indentation Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 3/6] dpdk-devbind: fix python lint warnings for imports Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 4/6] dpdk-devbind: do not use len(x) to test for empty Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 5/6] dpdk-devbind: fix unnecessary else after return Stephen Hemminger
2020-11-04  7:03     ` [dpdk-dev] [PATCH v2 6/6] dpdk-devbind: use in to test for multiple strings Stephen Hemminger
2020-11-04  9:28     ` [dpdk-dev] [PATCH v2 0/6] dpdk-devbind: python lint cleanups Bruce Richardson
2020-11-22 21:03       ` Thomas Monjalon
2020-11-04 16:57     ` Stephen Hemminger

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