check latin1 character set in function password_encode_check

https://gitee.com/openeuler/openEuler-Advisor/pulls/105#note_3175442

patch-tracking/patch_tracking/cli/generate_password

@@ -8,6 +8,32 @@ import re
 from werkzeug.security import generate_password_hash
 
 
+def usage():
+    """ usage """
+    print(
+        """usage: generate_password PASSWORD
+
+Requirements:
+1. PASSWORD must be within the 'latin1' character set
+2. PASSWORD strength require:
+    6 characters or more
+    at least 1 digit [0-9]
+    at least 1 alphabet [a-z]
+    at least 1 alphabet of Upper Case [A-Z]
+    at least 1 special character from [~!@#%^*_+=-]
+"""
+    )
+
+
+def password_encode_check(password):
+    """ check if password within the latin1 character set """
+    try:
+        password.encode("latin1")
+    except UnicodeEncodeError as err:
+        return str(err)
+    return None
+
+
 def password_strength_check(password):
     """
     Verify the strength of 'password'
@@ -44,40 +70,15 @@ def password_strength_check(password):
     }
 
 
-def usage():
-    """ usage """
-    print(
-        """usage: generate_password PASSWORD
-
-Requirements:
-1. PASSWORD must be within the 'latin1' character set
-2. PASSWORD strength require:
-    6 characters or more
-    at least 1 digit [0-9]
-    at least 1 alphabet [a-z]
-    at least 1 alphabet of Upper Case [A-Z]
-    at least 1 special character from [~!@#%^*_+=-]
-"""
-    )
-
-
-def latin1_encode(text):
-    """ latin1 encode """
-    try:
-        text.encode("latin1")
-    except UnicodeEncodeError as err:
-        return str(err)
-    return None
-
-
 if __name__ == "__main__":
     if len(sys.argv) != 2:
         usage()
         sys.exit(1)
 
     password_ = sys.argv[1]
-    err = latin1_encode(password_)
-    if err:
+
+    ret = password_encode_check(password_)
+    if ret:
         usage()
         print("PASSWORD: only latin1 character set are allowed")
         sys.exit(1)
@@ -85,7 +86,6 @@ if __name__ == "__main__":
     ret = password_strength_check(password_)
     if not ret['ok']:
         usage()
-
         print("Password strength is not satisfied:")
         for item in ret['error']:
             if ret['error'][item]: