I am missing something in below code, not able to save in correct format, Can you please guide where I'm going wrong...
Python Code
str_next_thursday_expiry = 23JUL2020
f = open("data/expiry.json","r")
with open("data/expiry.json", "w") as f:
json.dump(str_next_thursday_expiry, f)
Output in expiy.json
"23JUL2020"
I want to store this in below format, not getting what needs to be corrected..
{"expirydate": "23JUL2020"}
str_next_thursday_expiry = "23JUL2020"
with open("data/expiry.json", "w") as f:
data = {"expirydate":str_next_thursday_expiry}
json.dump(data, f)
try this
content = {"expirydate": "23JUL2020"}
with open("data/expiry.json", "w") as f:
json.dump(str_next_thursday_expiry, f)
Related
I have this ".txt" file image so I want to convert it to a JSON file using python
I've tried a lot of solutions but It didn't work because of the format of the file.
can anyone help me, please!
can I convert it so it will be easy to manipulate it?
This is my file
Teste: 89
IGUAL
{
"3C:67:8C:E7:F5:C8": ["b''", "-83"],
"64:23:15:3D:25:FC": ["b'HUAWEI-B311-25FC'", "-83"],
"98:00:6A:1D:6F:CA": ["b'WE'", "-83"],
"64:23:15:3D:25:FF": ["b''", "-83"],
"D4:6B:A6:C7:36:24": ["b'Wudi'", "-51"],
"00:1E:2A:1B:A5:74": ["b'NETGEAR'", "-54"],
"3C:67:8C:63:70:54": ["b'Vodafone_ADSL_2018'", "-33"],
"90:F6:52:67:EA:EE": ["b'Akram'", "-80"],
"04:C0:6F:1F:07:40": ["b'memo'", "-60"],
"80:7D:14:5F:A7:FC": ["b'WIFI 1'", "-49"]
}
and this is the code I tried
import json
filename = 'data_strength/dbm-2021-11-21_12-11-47.963190.txt'
dict1 = {}
with open(filename) as fh:
for line in fh:
command, description = line.strip().split(None, 10)
dict1[command] = description.strip()
out_file = open('test1.json', "w")
json.dump(dict1, out_file, indent=4, sort_key=False)
out_file.close()
The JSON structure in your file starts at the first occurrence of a left brace. Therefore, you can just do this:
import json
INPUT = 'igual.txt'
OUTPUT = 'igual.json'
with open(INPUT) as igual:
contents = igual.read()
if (idx := contents.find('{')) >= 0:
d = json.loads(contents[idx:])
with open(OUTPUT, 'w') as jout:
json.dump(d, jout, indent=4)
My program takes a csv file as input and writes it as an output file in json format. On the final line, I use the print command to output the contents of the json format file to the screen. However, it does not print out the json file contents and I don't understand why.
Here is my code that I have so far:
import csv
import json
def jsonformat(infile,outfile):
contents = {}
csvfile = open(infile, 'r')
reader = csvfile.read()
for m in reader:
key = m['No']
contents[key] = m
jsonfile = open(outfile, 'w')
jsonfile.write(json.dumps(contents))
csvfile.close()
jsonfile.close()
return jsonfile
infile = 'orders.csv'
outfile = 'orders.json'
output = jsonformat(infile,outfile)
print(output)
Your function returns the jsonfile variable, which is a file.
Try adding this:
jsonfile.close()
with open(outfile, 'r') as file:
return file.read()
Your function returns a file handle to the file jsonfile that you then print. Instead, return the contents that you wrote to that file. Since you opened the file in w mode, any previous contents are removed before writing the new contents, so the contents of your file are going to be whatever you just wrote to it.
In your function, do:
def jsonformat(infile,outfile):
...
# Instead of this:
# jsonfile.write(json.dumps(contents))
# do this:
json_contents = json.dumps(contents, indent=4) # indent=4 to pretty-print
jsonfile.write(json_contents)
...
return json_contents
Aside from that, you aren't reading the CSV file the correct way. If your file has a header, you can use csv.DictReader to read each row as a dictionary. Then, you'll be able to use for m in reader: key = m['No']. Change reader = csvfile.read() to reader = csv.DictReader(csvfile)
As of now, reader is a string that contains all the contents of your file. for m in reader makes m each character in this string, and you cannot access the "No" key on a character.
a_file = open("sample.json", "r")
a_json = json.load(a_file)
pretty_json = json.dumps(a_json, indent=4)
a_file.close()
print(pretty_json)
Using this sample to print the contents of your json file. Have a good day.
I am downloading a file with boto3 from AWS S3, it's a basic JSON file.
{
"Counter": 0,
"NumOfReset": 0,
"Highest": 0
}
I can open the JSON file, but when I go to dump it back to the same file after changing some values, I get IOError: [Errno 9] Bad file descriptor.
with open("/tmp/data.json", "rw") as fh:
data = json.load(fh)
i = data["Counter"]
i = i + 1
if i >= data["Highest"]:
data["Highest"] = i
json.dump(data, fh)
fh.close()
Am I just using the wrong file mode or am I doing this incorrectly?
Two things. Its r+ not rw, and if you want to overwrite the previous data, you need to return to the beginning of the file, using fh.seek(0). Otherwise, the changed JSON string would be appended.
with open("/tmp/data.json", "r+") as fh:
data = json.load(fh)
i = data["Counter"]
i = i + 1
if i >= data["Highest"]:
data["Highest"] = i
fh.seek(0)
json.dump(data, fh)
fh.close()
But that may overwrite the data only partially. So closing and re-opening the file with w is probably a better idea.
with open("/tmp/data.json", "r") as fh:
data = json.load(fh)
i = data["Counter"]
i = i + 1
if i >= data["Highest"]:
data["Highest"] = i
with open("/tmp/data.json", "w") as fh:
json.dump(data, fh)
fh.close()
No need to fh.close(), that's what with .. as is for.
E.g., I wrote some data to the file and then try to read them:
mocked_open = mock_open()
with patch('__builtin__.open', mocked_open, create=True):
with open('file', 'w') as f:
f.write('text')
with open('file', 'r') as f:
res = f.read()
But after this,res is empty. How to get written data for this file?
I am trying to save my data to a file. My problem is the file i saved contains double quotes at the first and the last of a line. I have tried many ways to solve it from str.replace(), strip, csv to json, pickle. However, the problem has been still persistent. I have got stuck with it. Please help me. I will detail my problem below.
Firstly, I have a file called angles.txt like that:
{'left_w0': -2.6978887076110842, 'left_w1': -1.3257428944152834, 'left_w2': -1.7533400385498048, 'left_e0': 0.03566505327758789, 'left_e1': 0.6948932961 181641, 'left_s0': -1.1665923878540039, 'left_s1': -0.6726505747192383}
{'left_w0': -2.6967382220214846, 'left_w1': -0.8440729275695802, 'left_w2': -1.7541070289428713, 'left_e0': 0.036048548474121096, 'left_e1': 0.166820410 49194338, 'left_s0': -0.7731263162109375, 'left_s1': -0.7056311616210938}
I read line by line from the text file and transfer to a dict variable called data. Here is the reading file code:
def read_data_from_file(file_name):
data = dict()
f = open(file_name, 'r')
for index_line in range(1, number_lines +1):
data[index_line] = eval(f.readline())
f.close()
return data
Then I changed something in the data. Something like data[index_line]['left_w0'] = data[index_line]['left_w0'] + 0.0006. After that I wrote my data into another text file. Here is the code:
def write_data_to_file(data, file_name)
f = open(file_name, 'wb')
data_convert = dict()
for index_line in range(1, number_lines):
data_convert[index_line] = repr(data[index_line])
data_convert[index_line] = data_convert[index_line].replace('"','') # I also used strip
json.dump(data_convert[index_line], f)
f.write('\n')
f.close()
The result I received in the new file is:
"{'left_w0': -2.6978887076110842, 'left_w1': -1.3257428944152834, 'left_w2': -1.7533400385498048, 'left_e0': 0.03566505327758789, 'left_e1': 0.6948932961 181641, 'left_s0': -1.1665923878540039, 'left_s1': -0.6726505747192383}"
"{'left_w0': -2.6967382220214846, 'left_w1': -0.8440729275695802, 'left_w2': -1.7541070289428713, 'left_e0': 0.036048548474121096, 'left_e1': 0.166820410 49194338, 'left_s0': -0.7731263162109375, 'left_s1': -0.7056311616210938}"
I cannot remove "".
You could simplify your code by removing unnecessary transformations:
import json
def write_data_to_file(data, filename):
with open(filename, 'w') as file:
json.dump(data, file)
def read_data_from_file(filename):
with open(filename) as file:
return json.load(file)