https://github.com/wynwxst/jsonfiles.htc.py

how to write to json files in python
https://github.com/wynwxst/jsonfiles.htc.py

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how to write to json files in python

• Host: GitHub
• URL: https://github.com/wynwxst/jsonfiles.htc.py
• Owner: wynwxst
• Created: 2021-05-08T07:14:13.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-05-08T07:54:41.000Z (over 3 years ago)
• Last Synced: 2024-11-13T04:34:02.587Z (2 months ago)
• Size: 7.81 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# jsonfiles.htc.py

how to write to json files in python

# 1 - import json

```python

import json

```

# 2 - Create a function to start values, eg. login

```python

import json

def get_data():

  with open("data/template.json","r") as f:

  	users = json.load(f)

	return users

def signup(usr,pwd):

	users = get_data()	

	users[usr] = {}

	users[usr]["password"] = pwd

	with open("data/template.json","w") as f:

		json.dump(users,f)

```

sign up basically sets the value to what it is given

in the part where we get_data()

we load the file as a function

meanwhile when we dump it, we are assigning the values and sending it into the json file

####

The difference is in loading we set it to read hence, the "r" and to dump it must be "w"

####

Ok so now we have our sign up which loads the account with the values given, in a json file it will be look like this

```json

{}

```

let's say the username was "eris" and the password was "1234"

```json

{"eris": {"password": "1234"}}

```

So to call that value we need to first load the json and then go for that value eg.

```python

import json

def get_pwd(username)

  users = get_data()

  password = users[username]["password"]

  print(password)

````

So with this if we called it as `get_pwd("eris")` it would print `1234`, so this is how we chec for the values we have against the values given

Moving on, let's say that the json file wasn't found so we add a checkjson function

```python

import json

import os

def check4json():

  try:

    os.system("cat data/template.json")

  except FileNotFoundError:

    os.system("touch data/template.json")

    os.system("echo {} > data/template.json")

```

Ok everything is set up for utilising the json values so now let's add the input part

```python

import json

import os

def get_data():

  with open("data/template.json","r") as f:

  	users = json.load(f)

  return users

def signup(usr,pwd):

	users = get_data()	

	users[usr] = {}

	users[usr]["password"] = pwd

	with open("data/template.json","w") as f:

		json.dump(users,f)

def check4json():

  try:

    os.system("cat data/template.json")

  except FileNotFoundError:

    os.system("touch data/template.json")

    os.system("echo {} > data/template.json")

query = input("username: ")

print(query)

query2 = input("password: ")

print(query2)

if query2 == "signup":

	signup(query,query2)

users = get_data()

try:

	if query2 == users[query]["password"]:

		print("logged in....")

	if query2 != users[query]["password"]:

		print("password")

except KeyError:

	signup(query,query2)

	print("signed you up")

```

so what we've done is taken the values given, and checked it with the values we have

since we have "eris" in username, if anyone types anything but eris they will be registered

let's say they type eris, we then check wether the password matches the password set.

That is how to write, load and use json files in python.