Python readline 空行

Question

I would like to read serial port with python, and print result with readline, but I'm getting empty lines between all result lines. Can you tell me how can I delete all empty lines?

My code:

#!/usr/bin/python

import serial
import time
import sys

ser = serial.Serial("/dev/ttyACM0", 9600)

print ser.readline()
print ser.readline()
print ser.readline()
print ser.readline()
print ser.readline()

I tried few answers from behind but still got empty lines. My txt file looks like:

T:  59.30%  22.20 8% 11% N 

T:  59.80%  22.20 8% 11% N 

T:  59.80%  22.20 8% 11% N 

T:  59.80%  22.20 8% 11% N 

but I need file like:

T:  59.30%  22.20 8% 11% N 
T:  59.80%  22.20 8% 11% N 
T:  59.80%  22.20 8% 11% N 
T:  59.80%  22.20 8% 11% N     

EDIT:

Found way to fix that problem:

    line = ser.readline().decode('utf-8')[:-2]

It works fine now. This -2 delete /n and that's all.

Answer 1

Either:

import serial

with serial.Serial("/dev/ttyACM0", 9600) as ser:
    for line in ser:
        print line.rstrip('\n')

or

import serial

with serial.Serial("/dev/ttyACM0", 9600) as ser:
    for line in ser:
        print line,

Answer 2

while True:
    line = ser.readline()
    if not line.strip():
        continue
    do_something_with(line)

Answer 3

According to these tips , this should do:

import serial

ser = serial.Serial("/dev/ttyACM0", 9600)

while True:
    line = ser.readline()
    if line:
        print(line)

Answer 4

import serial
ser = serial.Serial('COM11', 115200, timeout = 0.01)
print("Starting up")
while True:
    try:
        line = ser.readline().decode('ascii').strip()
        if line:
            print (line)
    except:
        pass
    ser.flush()