【交作业啦】
ex15.py
# 从sys软件包中取出argv这个特性 from sys import argv script, filename = argv txt = open(filename) print(f"Here is your file {filename}:") print(txt.read()) txt.close() print("Type the filename again:") file_again = input("> ") txt_again = open(file_again) print(txt_again.read()) txt_again.close()
【会话】
1 运行ex15.py
2 在python中直接打开文件
PS E:lpthw> python ex15.py ex15_sample.txt Here is your file ex15_sample.txt: This is stuff I typed into a file. It is really cool stuff. Lots and lots of fun to have in here. Type the filename again: > ex15_sample.txt This is stuff I typed into a file. It is really cool stuff. Lots and lots of fun to have in here. PS E:lpthw> python Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:21:23) [MSC v.1916 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> filename = input() ex15_sample.txt >>> txt = open(filename) >>> txt.read() 'This is stuff I typed into a file.nIt is really cool stuff.nLots and lots of fun to have in here.n' >>> quit() PS E:lpthw>
【学习心得】
1 在python提示符下使用open()打开文件,作者期望怎样实现?
2 python与c的区别:
python脚本中不需要main()函数,直接顺序执行了。不过,到目前为止,脚本中还没有出现任何函数,后面学到函数后,需要再关注下。
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