变更

2025-08-05 09:19:34 +08:00
commit 584548d006
1696 changed files with 53855 additions and 0 deletions
@@ -0,0 +1,47 @@
+# 文件读取
+# 文件打开
+# import time
+
+# f = open("d:program/测试.txt", "r", encoding='UTF-8')
+# print(type(f))
+# # 文件读取
+# print(f.read(3))
+# print(f.read())  # 第二次read会接着上次的读取
+# readlines()读取
+# print(f.readlines())
+# print(type(f.readlines()))
+# readline（）读取
+# print(f.readline())
+# for循环读取 文件
+# for line in f:
+#     print(line)
+# 文件暂停
+# time.sleep(2333)
+# f.close()
+
+# #with open 语法操作
+# with open("d:program/测试.txt", "r", encoding='UTF-8') as f:
+#     for line in f:
+#         print(line)
+#
+# time.sleep(30000)
+#
+# # 文件写入
+# f = open("d:program/测试1.txt", "w", encoding="UTF-8")
+# f.write("hello world")
+# # f.flush()
+# # time.sleep(30000)
+# f.close()  # close()内置flush功能
+
+# 文件备份
+fw = open("D:\program/bill.txt.bak", 'w', encoding="UTF-8")
+f = open("D:\program/12.txt", 'r', encoding="UTF-8")
+for line in f:
+    line=line.strip()
+    if line.split(",")[4] == "测试":
+        continue
+    else:
+        fw.write(line)
+        fw.write("\n")
+f.close()
+fw.close()