Modify the Python code in the first part of the posting below so that it outputs

Question

Modify the Python code in the first part of the posting below so that it outputs over 100 cycles:

https://stackoverflow.com/questions/19865137/how-to-exp ort-pyserial-reading-data-into-text-file-or-matlab

This is the code I am looking to modify:

import serial ser = serial.Serial('/dev/ttyACM0',115200)
f = open('dataFile.txt','a')

while 1 :
   f.write(ser.readline())
     f.close()
     f = open('dataFile.txt','a')

Here is what I tried, but it gives me Syntax Error: EOS while scanning string literal

import serial

#this connects python with arduino board, Blink, at a baud rate of 115200
ser = serial.Serial('/dev/cu.usbmodem1421,115200)

#This opens the Blink file
f = open('Blink.txt') #'a' was removed from orginal post

x = 0
while x <= 100:
f.write(ser.readline())
f.close()
f = open('Blink.txt')
if x > 100:
break

Explanation / Answer

Notes:

You have a syntax error in your code, try below code and it'll work like.

Code:

import serial

ser = serial.Serial('/dev/ttyACM0',115200)

# Open file with append to keep appending.
# set buffer size to zero,
# this will write the data straight to the disk, you no longer need to open and
# close.
with open('Blink.txt', 'a', 0) as f:
for x in xrange(100):
f.write(ser.readline())
f.flush()

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