save project

bb.py

+import ch
+
+while True:
+    xuan =input("请选择对文件的打开方式：(a:追加,r:读取，q:退出)")
+    if xuan == "a":
+        ch.write_one()
+    if xuan == "r":
+        ch.read_one()
+    if xuan == "q":
+        break
+
+
+
+    
\ No newline at end of file

ch.py

+def write_one():
+    while True:
+        yonghu=input("用户请输入<你想写的内容(注：退出请输入q):")
+        if yonghu =="q":
+            break
+        else:
+            with open(r"C:\Users\Think\Desktop\er.txt","a",encoding="utf-8")as a_one:
+                a_one.write(yonghu+"\n")
+def read_one():
+    with open(r"C:\Users\Think\Desktop\er.txt","r",encoding="utf-8")as b_one:
+            read_raed_one=b_one.read()
+    print(read_raed_one)
+

p.py

-# a=pen("C:ers\Think\Desktop\er.txt","w",encoding="utf-8")
-# a.write("re")
-# a.close()
-with open(r"C:\Users\Think\Desktop\er.txt","a",encoding="utf-8") as a:
-    a.write("小黄:890本\n")
-    a.write("小绿:880本\n")
-    a.write("小兰:0本\n")
\ No newline at end of file