save project

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'
+#file1 = open(r'C:\Users\Admin\Desktop\text.txt','w',encoding='utf-8')
+#file1.write('小兰：12本,小丽：11本,李文：9本,张伟：16本')
+#file1.close()
+#with open(r'C:\Users\Admin\Desktop\text.txt','a',encoding='utf-8') as file1:
+#    file1.write('小强:12\n李明:15\n')
+#    for data in file1:
+#        if '小强:10' in data:
+#           print(30*'-')
+#            print('数据在文件中')
+#            print(30*'-')
+new_data=""
+with open(r'C:\Users\Admin\Desktop\text.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强:10' in data :
+            data.replace('小强:10','小强:11')
+        new_data+=data
+with open(r'C:\Users\Admin\Desktop\text.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+with open(r'C:\Users\Admin\Desktop\text.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)