python - 在python中使用变量创建txt文件

Question

我正在为学校开发一个程序，该程序询问用户想要为文件命名什么，然后我应该写入该文件。

到目前为止我有这个:

dream_file = input("What file name would you like to save the cards? ")
dream_file = open(dream_file, 'w')

dream_file.write(str(dream_hand1))
print(dream_file)

dream_file.close()

当我运行它时，我收到此错误: <_io.TextIOWrapper name='dream' mode='w'encoding='US-ASCII'>

据我所知，该文件永远不会被创建。

Answer 1

文件肯定正在被写入，但正如其他人提到的，您只是打印出文件句柄的 python 表示形式的字符串表示形式。如果您想打印文件内容，只需进行一些更改即可。

# it is poor practice to reuse variable names
# for completely different things. It is best
# to differentiate your file path and the file
# handler itself.
dream_file_path = input("What file name would you like to save the cards? ")

# w+ allows reading and writing of files
dream_file = open(dream_file_path, 'w+')

dream_file.write(str(dream_hand1))

# seek 0 brings you back from where you just
# wrote (end of the file), to the beginning
dream_file.seek(0)

# .read() simply reads the entire file as a string
print(dream_file.read())

dream_file.close()