Python Serial Readline() vs Readlines()

Question

I need to use some At commands & read the data for that I am using below cmds, the response I would be getting is in multiple lines

serialPort.write(b"AT+CMD\r\n")
time.sleep(1)
response = serialPort.readlines()

if I am using only readline() i dont get full expected response but if i do read lines() i do get the full data but some lines skipped sometime, i need to know the difference between these 2 methods & also for the

timeout flag

how does it effects functionality of these

Answer 1

readline() : reads one line, if you use multiple times, each time it will keep giving next line until it reaches end of file or file is closed.

readlines() : returns a list of lines from a file

If you want the output of a whole file, you can use read() instead.

About the timeout flag, I don't think timeout flag exists for I/O operations in Python? But if you are talking about the one in Serial , then it specifies the maximum time to wait for serial data.