文件操作（相关代码）

# 输入文件名
# oldFileName = input("请输入要拷文件的文件名字:")
# # 以读的方式打开文件
# oldFile = open(oldFileName,'rb')
# 提取文件的后缀
# fileFlagNum = oldFileName.rfind('.')
# if fileFlagNum > 0:
#     fileFlag = oldFileName[fileFlagNum:]
# 组织新的文件名字
#     newFileName = oldFileName[:fileFlagNum] + '-bakcup' + fileFlag
# 创建新文件
#     newFile = open(newFileName, 'wb')
# 把旧文件中的数据，一行行复制到新文件中
#     for lineContent in oldFile.readlines():
#         newFile.write(lineContent)
# 关闭文件
#     oldFile.close()
#     newFile.close()

# f = open("1909c2", mode="r", encoding="utf-8")
# print(f.readlines())
# f.close()

# file_name = input("请输入要打开的文件")
# file_1 = open(file_name,"r")
# link = file_1.readlines()
# print(link)
# i = 0
# list_1 = []
# s = 0
# o = 0
# for j in link:
#     k =  int(j[len(j) -3] + j[len(j) - 2])
#     s += k
#
#
#     if k > 60:
#         # print((j[j.index(",")]))
#         d = j.index(",")
#         print("%s超过了60分"%(j[0:d]))
#         if j[0:d][0] == "L":
#             print("%s的名字是'L'开头的"%j[0:d])
# print("总分是%s" % s)