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'
+#lest=open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8')
+#lest.write('小兰：12本，小丽：11本，李文：9本，张伟：16本')
+#lest.close()
+#with open(r"C:\Users\Administrator\Desktop\test.txt",'a',encoding='utf-8') as lest:
+#    lest.write('小强：12本\n')
+#    lest.write('李明：15本\n')
+#with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as lest:
+#    a=lest.read()
+#    print(a)
+new_data=''
+with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as lest:
+    for data in lest:
+        if "小强：10本" in data:
+            data=data.replace("小强：10本","小强：11本")
+        if "小兰：12本" in data:
+            data=data.replace("小兰：12本","小强：14本")
+        new_data += data
+with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as lest:
+    lest.write(new_data)
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