May 28, 2011 · How do I write a line to a file in modern Python? I heard that this is deprecated:

May 27, 2010 · I want to append a newline to my string every time I call file.write(). What's the easiest way to do this in Python?

508 What are you going to do with the file? Does this file exist for humans, or other programs with clear interoperability requirements? If you are just trying to serialize a list to disk for later use …

Jan 16, 2011 · On some operating systems, opening the file with 'a' guarantees that all your following writes will be appended atomically to the end of the file (even as the file grows by …

With Python 2 on Windows, I found that writing a bytearray still converts \n to \r\n, making it unsatisfactory for binary data, if the "b" flag is not passed when opening the file.

How do I write JSON data stored in the dictionary data to a file? f = open ('data.json', 'wb') f.write (data) This gives the error: TypeError: must be string or buffer, not dict

When you say "replace the old content that's in the file with the new content", you need to read in and transform the current contents data = file.read(). You don't mean "blindly overwrite it …

I have looked through the information that the Python documentation for pickle gives, but I'm still a little confused. What would be some sample code that would write a new file and then use …

Is there a way to save all of the print output to a txt file in python? Lets say I have the these two lines in my code and I want to save the print output to a file named output.txt.

May 1, 2016 · 229 First of all you are opening file in read mode and trying to write into it. Consult - IO modes python Secondly, you can only write a string or bytes to a file. If you want to write a …