feat: format codes

class_person.py

@@ -8,6 +8,7 @@ class Person():
     def __repr__(self):
         return repr((self.name, self.age))
 
+
 people = [
     Person("tom", 22),
     Person("jack", 11),

functions.py

@@ -2,16 +2,20 @@
 
 do_add = lambda a, b: a + b
 
+
 def do_add_2(a, b):
     return a + b
 
+
 def incr(base, inc=1):
     return base + inc
 
+
 def var_args(first_arg="first", *args):
     print("fist arg:", first_arg)
     print("rest args:", args)
 
+
 if __name__ == "__main__":
     print("1 + 2 =", do_add(1, 2))
     print("1 + 2 =", do_add_2(1, 2))

leap_year.py

@@ -3,6 +3,7 @@
 def is_leap_year(year: int):
     return year % 4 == 0 and year % 100 != 0 or year % 400 == 0
 
+
 if __name__ == "__main__":
     print(1582, is_leap_year(1582))
     print(2000, is_leap_year(2000))

tls_certificate.py

@@ -2,6 +2,7 @@
 import socket
 import ssl
 
+
 def get_server_certificate(hostname, port=443):
     # context = ssl.create_default_context()
     context = ssl._create_unverified_context()
@@ -11,6 +12,7 @@ def get_server_certificate(hostname, port=443):
             cert = ssock.getpeercert()
             return cert
 
+
 # not success, but why?
 if __name__ == "__main__":
     certificate = get_server_certificate("hatter.ink")