I was looking on a web of Python the commands mentioned in title and their difference; however, I have not satisfied with a complete basic understanding of these commands. Suppose my file has only the following content. This is the first time I am posing a question on this site, I will appreciate if someone clarifies my doubts for learning the Python. I thank the StackOverflow for this platform. In the commands read(), readline() and readlines(), one difference is of course reading whole file, or a single line, or specified line. But I didn't understand the use/necessity of bracket () in these commands. For example, what is the difference in readline() and readline(7)? If the argument 7 exceeds the number of lines in the file, what will be output? On the web mentioned above, it is explained what the argument in read() does; but it is not mentioned what the argument in readline() or readlines() does? Continue reading...
