save project

diy.py

+#file1=open(r'C:\Users\小爱\Desktop\test.txt','w',encoding='utf-8')
+#file1.write('小强：10本\n')
+#file1.write('小文：10本\n')
+# file1.write('小兰：12本')
+# file1.write('小丽：11本')
+# file1.write('李文：9本')
+# file1.write('张伟：16本')
+#file1.close()
+# with open(r'C:\Users\小爱\Desktop\test.txt','w',encoding='utf-8') as filel:
+#     file1.write('小强：10本\n') 
+#     file1.write('李明：11本\n')
+# with open(r'C:\Users\小爱\Desktop\test.txt','r',encoding='utf-8') as filel:
+#     i=filel.read()
+# print(i)
+new_data=''
+with open(r'C:\Users\小爱\Desktop\test.txt','r',encoding='utf-8') as filel:
+    a=filel.read()
+    for i in a:       
+        if i=='小强：10本':
+            i.replace('小强：10本','小强：15本')
+    new_data+=i
+with open(r'C:\Users\小爱\Desktop\test.txt','w',encoding='utf-8') as filel:
+    filel.write(new_data)
+
+
+
+
+
+
+
+
+                                        # 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'