def find_date_type(string_date):
  import re
  group1 = re.findall("[0-9][0-9] - [a-zA-Z]",string_date)
  group11 = re.findall("[0-9][0-9]-[a-zA-Z]",string_date)

  group2 = re.findall("[0-9][0-9]/[0-9][0-9]",string_date)
  group22 = re.findall("[0-9][0-9] / [0-9][0-9]",string_date)

  group3 = re.findall("[a-zA-Z] - [a-zA-Z]", string_date)
  group33 = re.findall("[a-zA-Z]-[a-zA-Z]", string_date)

  if group1 or group11:
    group_type = 1
  elif group2 or group22:
    group_type = 2
  elif group3 or group33:
    group_type=3
  else:
    group_type=0
  return group_type

#group1 = Jan 16-Febr 19
#group11 = Jan 16 - Febr 19  (the dash has spaces)

#group2 = 2011/2012
#group22 = 2011 / 2012

#group3 = June - July 2020
#group33 = June-July 2020 (#no space in the dash)