save project

1.py/1.py

+#file=open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')
+#file.write('小强，10本/n')
+#file.write('李明，15本/n')
+#file.close
+
+with open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')as file:
+    file.write('小强，10本/n')
+    file.write('李明，15本/n')

12.py

+with open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')as file:
+    for data in file:
+        if'小强，10本/n'in data:
+            print('小强数据在文件中')
+        if'小兰，12本/n'in data:
+            print('小兰数据在文件中')
\ No newline at end of file

13.py

+new_data=''
+with open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')as file:
+    for data in file:
+        if'小强，10本/n'in data:
+            data=data.replace('小强，10本','小强，11本')
+        nem_data += data
+
+with open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')as file:
+    file.erite(nem_date)
+
+with open(r"C:\Users\EDY\Desktop\book.txt",'a',encoding='utf-8')as file:
+    a=file.read()
+    print(a)
\ No newline at end of file

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+file=open("C:\Users\EDY\Desktop\book.txt",'w',encoding='utf-8')
+open(r'C:\Users\EDY\Desktop\book.txt','w',encoding='utf-8')
+file.write('小兰，12本/n')
+file.write('小丽，11本/n')
+file.write('李文，9本/n')
+file.write('张伟，16本/n')
\ No newline at end of file