message: Remove built-in function `len` used as condition
diff: @@ -220,7 +220,7 @@ class Packet:
  self.err_msg("Missing parameter(s) for identifier")
  self.m_name = line[1].strip()
  - if not len(self.m_name):
  + if not self.m_name:
  self.err_msg("Name cannot be blank")
  if len(self.m_name.split()) > 1:
  @@ -254,7 +254,7 @@ class Packet:
  self.err_msg("Missing parameter(s) for item")
  it.m_name = line[1].strip()
  - if not len(it.m_name):
  + if not it.m_name:
  self.err_msg("Name cannot be blank")
  if len(it.m_name.split()) > 1:
  @@ -353,7 +353,7 @@ class Packet:
  it.m_is_constant = True
  it.m_name = line[1].strip()
  - if not len(it.m_name):
  + if not it.m_name:
  self.err_msg("Name cannot be blank")
  if len(it.m_name.split()) > 1:
  @@ -412,7 +412,7 @@ class Packet:
  global tlm_period
  global verbose
  - if not len(self.m_header_list) and not len(self.m_item_list):
  + if not self.m_header_list and not self.m_item_list:
  return
  self.m_bytes = (self.m_bit_index + 7) / 8
  @@ -529,7 +529,7 @@ class CsvLine:
  global tlm_input_line_num
  - if not len(line):
  + if not line:
  return
  nonblank = False
  