repo by dltkdgns00
for a memoring I studied Python
studied number data type (int, float) and standard libraries (math, random)
studied text data type (char, string), correlation of number and text, length and replace
studied list (len, min, max, sum) and standard libraries (statistics)
studied input() (similar to scanf in C language but more simple)
studied boolean what display 'True' and 'False
studied if, else, elif (using functions)
import_id_pswd_check_test.py
studied 'for' (using list and dictionary)