I move dictionary
user = {
'name': 'Bob',
'age': '11',
'place': 'moon',
'dob': '12/12/12'
}
user1 = {
'name': 'John',
'age': '13',
'place': 'Earth',
'dob': '12/12/12'
}
What is the best way to loop through each user by adding 1? So the next user would be user2.
Thanks
Instead of assigning user1 as the variable name for the dictionary you could create a new dictionary variable where the key is the user and the value is a nested dictionary with all of the information about the users like this:
users = {
'user1': {
'name': 'John',
'age': '13',
'place': 'Earth',
'dob': '12/12/12'
},
'user2': {
'name': 'Bob',
'age': '11',
'place': 'moon',
'dob': '12/12/12'
}
...}
Then you can iterate over the nested dictionary for all users user1, user2,...userN instead of assigning each user to its own variable.
Update: Here's how you would then loop across the nested dictionary:
for k, v in users.items():
print(k, v)
where k is the key ('user1', 'user2' etc.) and v is the nested dictionary containing the information for the user.
The easiest way to deal with this (in my opinion is having the dicts in a list. I'd only use dictionaries if the keys actually mean something. The below is also a valid dict to convert to json.
users = [{
'name': 'John',
'age': '13',
'place': 'Earth',
'dob': '12/12/12'
},
{
'name': 'Bob',
'age': '11',
'place': 'moon',
'dob': '12/12/12'
}]
user1 is users[0], user2 is users[1] ...
users.append({...}) to add more etc.
And if you loop and want the user number:
for ind,item in enumerate(users):
print("user{}".format(ind+1))
Prints:
user1
user2
zip() is the best way to iterate over multiple arrays,list and json objects. Using zip(), we can iterate over given two json dictionary with a single for loop.
import json
user = {
'name': 'Bob',
'age': '11',
'place': 'moon',
'dob': '12/12/12'
}
user1 = {
'name': 'John',
'age': '13',
'place': 'Earth',
'dob': '12/12/12'
}
for (u, u1) in zip(user, user1):
print(user[u], user1[u1])
Bob John
11 13
moon Earth
12/12/12 12/12/12
You can do that, using globals or locals depending on your scope:
>>> for i in range(2):
... print(globals()['user' + str(i)])
...
{'name': 'Bob', 'age': '11', 'place': 'moon', 'dob': '12/12/12'}
{'name': 'John', 'age': '13', 'place': 'Earth', 'dob': '12/12/12'}
But as stated in the comments, I would recommend using a list:
>>> users = [user0, user1]
>>> for i in range(2):
... print(users[i])
...
{'name': 'Bob', 'age': '11', 'place': 'moon', 'dob': '12/12/12'}
{'name': 'John', 'age': '13', 'place': 'Earth', 'dob': '12/12/12'}
here is the code that I did for starting to compare 2 dictionaries.:
MENU = {
"espresso": {
"ingredients": {
"water": 50,
"milk": 0,
"coffee": 18,
},
"cost": 1.5,
},
"latte": {
"ingredients": {
"water": 200,
"milk": 150,
"coffee": 24,
},
"cost": 2.5,
},
"cappuccino": {
"ingredients": {
"water": 250,
"milk": 100,
"coffee": 24,
},
"cost": 3.0,
}
}
resources = {
"water": 300,
"milk": 200,
"coffee": 100,
}
Choice_Ingredients=MENU["ingredients"]
for (key1, value1), (key2, value2) in zip(Choice_Ingredients.items(), resources.items()):
print (f"{key1} : {value1} \n{key2} : {value2}")
The above code prints.:
>water : 200
>water : 300
>milk : 150
>milk : 200
>coffee : 24
>coffee : 100
In case someone is actually searching for a solution to properly loop through multiple dicts without creating unnecessary copies or using nested loops...
from itertools import chain
d0 = dict(a=1, b=2)
d1 = dict(c=3, d=4)
for key, val in chain(d0.items(), d1.items()):
...
Ideally you should use chainmap to iterate through multiple dictionaries. import the chainmap from itertools like:
from itertools import Chainmap
d1 = {'k1': 'v1'}
d2 = {'k2': 'v2'}
for k, v in (d1,d2).items():
print(k,v)
