'str' object does not support item assignment in python?

Question

I want to read the input.txt line by line and send that as a request to the server and later save the response respectively. how to read and write the data line by line ? my code below works for just one input within input.txt (ex : I am Hungry). Can you please help me how to do it for multiple input ? I did as below. now throwing an error as : File "tts.py", line 198, in TEXT_TO_READ["tts_input"] = line TypeError: 'str' object does not support item assignment

my code :

TEXT_TO_READ = """{

    "tts_type": "text",

    "tts_input": "DUMMY"

}"""
TEXT_TO_READ = json.loads(TEXT_TO_READ)
scriptPath = os.path.abspath(__file__)
scriptPath = os.path.dirname(scriptPath)
fileInput = os.path.join(scriptPath, "input.txt")
try:
    content = open(fileInput, "r")
except IOError:
    print "error message"
    Error_Status = 1
    sys.exit(Error_Status)
for line in content.readlines():
    if len(line):
        TEXT_TO_READ["tts_input"]=line.strip('\n')
        TEXT_TO_READ = json.dumps(TEXT_TO_READ)
        print TEXT_TO_READ

request = Request()

Please don't vandalise your question.

Martijn Pieters
– Martijn Pieters

2016-02-03 14:50:51 +00:00
Commented Feb 3, 2016 at 14:50 — Martijn Pieters
– Martijn Pieters, Commented Feb 3, 2016 at 14:50
sorry. can you tell me how to fix it ?

sam
– sam

2016-02-03 14:51:26 +00:00
Commented Feb 3, 2016 at 14:51 — sam
– sam, Commented Feb 3, 2016 at 14:51

Martijn Pieters · Accepted Answer · 2016-02-03 14:22:27Z

0

You replaced TEXT_TO_READ with a JSON string:

TEXT_TO_READ = json.dumps(TEXT_TO_READ)

The next iteration you no longer have a dictionary, but a string, so your assignment fails:

TEXT_TO_READ["tts_input"]=line.strip('\n')

Don't use the same variable for both encoded JSON data and a dictionary.

answered Feb 3, 2016 at 14:22

Martijn Pieters

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5 Comments

sam Over a year ago

what should i modify here ?

Martijn Pieters Over a year ago

@sam: what are you trying to achieve? You could just do print json.dumps(TEXT_TO_READ) if all you want to do is write the JSON encoding to stdout. That avoids setting TEXT_TO_READ altogether.

sam Over a year ago

after reading first line from the input.txt then sending a request to the server later again reading the second line and sending the request. but the input here is tts_input. to access tts_input, we are using json loads

Martijn Pieters Over a year ago

You are only using json.loads() to load a hard-coded string at the start of your script. You are not using it on the file contents, if that was the goal.

Martijn Pieters Over a year ago

No, not really. I can only tell you why you got the error.

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