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'
+#ffdh=open(r"C:\Users\Administrator\Desktop\book.txt",'w',encoding='utf-8')
+#ffdh.write('小兰12本\n')
+#ffdh.write('小丽11本\n')
+#ffdh.write('李文9本\n')
+#ffdh.write('张伟16本\n')
+#ffdh.close()
+
+#with open(r"C:\Users\Administrator\Desktop\book.txt",'a',encoding='utf-8')as ffdh:
+    #ffdh.write('小强12本\n')
+    # ffdh.write('李明15本\n')
+# with open(r"C:\Users\Administrator\Desktop\book.txt",'r',encoding='utf-8')as ffdh:
+    # for a in ffdh:
+        #if "小强10本" in a:
+         #   print('小强在文件中')
+        #if "小丽12本" in a:
+            #print('小丽在文件中')
+c4=''
+with open(r"C:\Users\Administrator\Desktop\book.txt",'r',encoding='utf-8')as ffdh:
+    for a in ffdh:
+            if "小强10本" in a:
+                ffdh=ffdh.replace( "小强10本", "小强11本")
+            if "小丽12本" in a:
+                ffdh=ffdh.replace( "小兰12本", "小兰14本")
+            c4+=a
+with open(r"C:\Users\Administrator\Desktop\book.txt",'w',encoding='utf-8')as ffdh:
+    ffdh.write(c4)
+with open(r"C:\Users\Administrator\Desktop\book.txt",'r',encoding='utf-8')as ffdh:
+    a=ffdh.read()
+    print(a)
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