Develop Reference

Why am I getting this error "TypeError: string indices must be integers" when trying to fetch data from an api?

json file =
{
"success": true,
"terms": "https://curr
"privacy": "https://cu
"timestamp": 162764598
"source": "USD",
"quotes": {
"USDIMP": 0.722761,
"USDINR": 74.398905,
"USDIQD": 1458.90221
}
}
The json file is above. i deleted lot of values from the json as it took too many spaces. My python code is in below.
import urllib.request, urllib.parse, urllib.error
import json
response = "http://api.currencylayer.com/live?access_key="
api_key = "42141e*********************"
parms = dict()
parms['key'] = api_key
url = response + urllib.parse.urlencode(parms)
mh = urllib.request.urlopen(url)
source = mh.read().decode()
data = json.loads(source)
pydata = json.dumps(data, indent=2)
print("which curreny do you want to convert USD to?")
xm = input('>')
print(f"Hoe many USD do you want to convert{xm}to")
value = input('>')
fetch = pydata["quotes"][0]["USD{xm}"]
answer = fetch*value
print(fetch)
--------------------------------
Here is the
output
"fetch = pydata["quotes"][0]["USD{xm}"]
TypeError: string indices must be integers"

First of all the JSON data you posted here is not valid. There are missing quotes and commas. For example here "terms": "https://curr. It has to be "terms": "https://curr",. The same at "privacy" and the "timestamp" is missing a comma. After i fixed the JSON data I found a solution. You have to use data not pydata. This mean you have to change fetch = pydata["quotes"][0]["USD{xm}"] to fetch = data["quotes"][0]["USD{xm}"]. But this would result in the next error, which would be a KeyError, because in the JSON data you provided us there is no array after the "qoutes" key. So you have to get rid of this [0] or the json data has to like this:
"quotes":[{
"USDIMP": 0.722761,
"USDINR": 74.398905,
"USDIQD": 1458.90221
}]
At the end you only have to change data["quotes"]["USD{xm}"] to data["quotes"]["USD"+xm] because python tries to find a key called USD{xm} and not for example USDIMP, when you type "IMP" in the input.I hope this fixed your problem.

JSON Encoding Error While Loading String from a File

After opening and before loading a json file on phython, the code end up getting a string filled with unicode blocks between every character. Its seems to be a encoding problem, any easy way to solve this problem?
import json
import io
# read file
with open('BOVA111618484700 (1).json', 'r',encoding="ASCII") as myfile:
data=myfile.read()
print(data)
# parse file
obj = json.loads(data)
print(data) shows:
[�
�{�
�"�d�a�t�a�h�o�r�a�"�:� �"�2�0�2�1�.�0�4�.�1�5� �1�1�:�0�5�:�0�0�"�,�
�"�m�i�l�i�s�e�c�o�n�d�s�"�:� �"�1�6�1�8�4�8�4�7�0�0�2�3�4�"�,�
�"�b�i�d�"�:� �"�1�1�6�.�3�2�"�,�
�"�a�s�k�"�:� �"�1�1�6�.�3�6�"�,�
�"�l�a�s�t�"�:� �"�1�1�6�.�3�2�"�,�
�"�v�o�l�u�m�e�"�:� �"�1�"�,�
�"�f�l�a�g�s�"�:� �"�2�"�
�}�,� #json string continues...
when it should show:
[
{
"datahora": "2021.04.15 11:05:00",
"miliseconds": "1618484700234",
"bid": "116.32",
"ask": "116.36",
"last": "116.32",
"volume": "1",
"flags": "2"
}, #json string continues...
After the print, the json.load function returns this error:
JSONDecodeError: Expecting value: line 1 column 2 (char 1)

Thanks #Grismar and #tevemadar the encode of the file was actually "UTF-16 LE" assigning this to the open function solve everything!
import json
import io
# read file
with open('BOVA111618484700 (1).json', 'r',encoding="UTF-16 LE") as myfile:
data=myfile.read()
print(data)
# parse file
obj = json.loads(data)

Dictionary from a String with particular structure

I am using python 3 to read this file and convert it to a dictionary.
I have this string from a file and I would like to know how could be possible to create a dictionary from it.
[User]
Date=10/26/2003
Time=09:01:01 AM
User=teodor
UserText=Max Cor
UserTextUnicode=392039n9dj90j32
[System]
Type=Absolute
Dnumber=QS236
Software=1.1.1.2
BuildNr=0923875
Source=LAM
Column=OWKD
[Build]
StageX=12345
Spotter=2
ApertureX=0.0098743
ApertureY=0.2431899
ShiftXYZ=-4.234809e-002
[Text]
Text=Here is the Text files
DataBaseNumber=The database number is 918723
..... (There are more than 1000 lines per file) ...
On the text I have "Name=Something" and then I would like to convert it as follows:
{'Date':'10/26/2003',
'Time':'09:01:01 AM'
'User':'teodor'
'UserText':'Max Cor'
'UserTextUnicode':'392039n9dj90j32'.......}
The word between [ ] can be removed, like [User], [System], [Build], [Text], etc...
In some fields there is only the first part of the string:
[Colors]
Red=
Blue=
Yellow=
DarkBlue=

What you have is an ordinary properties file. You can use this example to read the values into map:
try (InputStream input = new FileInputStream("your_file_path")) {
Properties prop = new Properties();
prop.load(input);
// prop.getProperty("User") == "teodor"
} catch (IOException ex) {
ex.printStackTrace();
}
EDIT:
For Python solution, refer to the answerred question.
You can use configparser to read .ini, or .properties files (format you have).
import configparser
config = configparser.ConfigParser()
config.read('your_file_path')
# config['User'] == {'Date': '10/26/2003', 'Time': '09:01:01 AM'...}
# config['User']['User'] == 'teodor'
# config['System'] == {'Type': 'Abosulte', ...}

Can easily be done in python. Assuming your file is named test.txt.
This will also work for lines with nothing after the = as well as lines with multiple =.
d = {}
with open('test.txt', 'r') as f:
for line in f:
line = line.strip() # Remove any space or newline characters
parts = line.split('=') # Split around the `=`
if len(parts) > 1:
d[parts[0]] = ''.join(parts[1:])
print(d)
Output:
{
"Date": "10/26/2003",
"Time": "09:01:01 AM",
"User": "teodor",
"UserText": "Max Cor",
"UserTextUnicode": "392039n9dj90j32",
"Type": "Absolute",
"Dnumber": "QS236",
"Software": "1.1.1.2",
"BuildNr": "0923875",
"Source": "LAM",
"Column": "OWKD",
"StageX": "12345",
"Spotter": "2",
"ApertureX": "0.0098743",
"ApertureY": "0.2431899",
"ShiftXYZ": "-4.234809e-002",
"Text": "Here is the Text files",
"DataBaseNumber": "The database number is 918723"
}

I would suggest to do some cleaning to get rid of the [] lines.
After that you can split those lines by the "=" separator and then convert it to a dictionary.

How to find all "Name" parameters from big Json data using python3

How can I extract all the names from big JSON file using Python3.
with open('out.json', 'r') as f:
data = f.read()
Here I'm opening JSON file after that I tried this
a = json.dumps(data)
b= json.loads(a)
print (b)
Here is my data from JSON file.
{"data": [
{"errorCode":"E0000011","errorSummary":"Invalid token provided","errorLink":"E0000011","errorId":"oaeZ3PywqdMRWSQuA9_KML-ow","errorCauses":[]},
{"errorCode":"E0000011","errorSummary":"Invalid token provided","errorLink":"E0000011","errorId":"oaet_rFPO5bSkuEGKNI9a5vgQ","errorCauses":[]},
{"errorCode":"E0000011","errorSummary":"Invalid token provided","errorLink":"E0000011","errorId":"oaejsPt3fprRCOiYx-p7mbu5g","errorCauses":[]}]}
I need output like this
{"oaeZ3PywqdMRWSQuA9_KML-ow","oaet_rFPO5bSkuEGKNI9a5vgQ","oaejsPt3fprRCOiYx-p7mbu5g"}
I want all errorId.

Try like this :
n = {b['name'] for b in data['movie']['people']['actors']}

If you want to get or process the JSON data, you have to load the JSON first.
Here the example of the code
from json import loads
with open('out.json', 'r') as f:
data = f.read()
load = loads(data)
names = [i['name'] for i in data['movie']['people']['actors']]
or you can change names = [i['name'] for i in data['movie']['people']['actors']] to Vikas P answers

Try using json module for the above.
import json
with open('path_to_file/data.json') as f:
data = json.load(f)
actor_names = { names['name'] for names in data['movie']['people']['actors'] }

python - extract a specific key / value from json file by a variable

a bit new to python and json.
i have this json file:
{ "hosts": {
"example1.lab.com" : ["mysql", "apache"],
"example2.lab.com" : ["sqlite", "nmap"],
"example3.lab.com" : ["vim", "bind9"]
}
}
what i want to do is use the hostname variable and extract the values of each hostname.
its a bit hard to explain but im using saltstack, which already iterates over hosts and i want it to be able to extract each host's values from the json file using the hostname variable.
hope im understood.
thanks
o.

You could do something along these lines:
import json
j='''{ "hosts": {
"example1.lab.com" : ["mysql", "apache"],
"example2.lab.com" : ["sqlite", "nmap"],
"example3.lab.com" : ["vim", "bind9"]
}
}'''
specific_key='example2'
found=False
for key,di in json.loads(j).iteritems(): # items on Py 3k
for k,v in di.items():
if k.startswith(specific_key):
found=True
print k,v
break
if found:
break
Or, you could do:
def pairs(args):
for arg in args:
if arg[0].startswith(specific_key):
k,v=arg
print k,v
json.loads(j,object_pairs_hook=pairs)
Either case, prints:
example2.lab.com [u'sqlite', u'nmap']

If you have the JSON in a string then just use Python's json.loads() function to load JSON parse the JSON and load its contents into your namespace by binding it to some local name
Example:
#!/bin/env python
import json
some_json = '''{ "hosts": {
"example1.lab.com" : ["mysql", "apache"],
"example2.lab.com" : ["sqlite", "nmap"],
"example3.lab.com" : ["vim", "bind9"]
}
}'''
some_stuff = json.loads(some_json)
print some_stuff['hosts'].keys()
---> [u'example1.lab.com', u'example3.lab.com', u'example2.lab.com']
As shown you then access the contents of some_stuff just as you would any other Python dictionary ... all the top level variable declaration/assignments which were serialized (encoded) in the JSON will be keys in that dictionary.
If the JSON contents are in a file you can open it like any other file in Python and pass the file object's name to the json.load() function:
#!/bin/python
import json
with open("some_file.json") as f:
some_stuff = json.load(f)
print ' '.join(some_stuff.keys())

If the above json file is stored as 'samplefile.json', you can write following in python:
import json
f = open('samplefile.json')
data = json.load(f)
value1 = data['hosts']['example1.lab.com']
value2 = data['hosts']['example2.lab.com']
value3 = data['hosts']['example3.lab.com']