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I need to change my output from number 1 = 0 to (1:0) or ('1':0). I want to change to key value pair. Below is the code I'm using.
numberlist = [1]
val_list = [0]
for (number, val) in zip(numberlist, val_list):
print 'number ', number, ' = ', val
output: number 1 = 0
desired output is: ('1':0) or (1:0)
698
Python's zip() function is defined as zip(*iterables) . The function takes in iterables as arguments and returns an iterator. This iterator generates a series of tuples containing elements from each iterable. zip() can accept any type of iterable, such as files, lists, tuples, dictionaries, sets, and so on.
To check if a key-value pair exists in a dictionary, i.e., if a dictionary has/contains a pair, use the in operator and the items() method. Specify a tuple (key, value) . Use not in to check if a pair does not exist in a dictionary.
You can create a dictionary with list of zipped keys and values. Using zip() function you can loop through multiple lists at once.
The Python zip() function makes it easy to also zip more than two lists. This works exactly like you'd expect, meaning you just only need to pass in the lists as different arguments. What is this? Here you have learned how to zip three (or more) lists in Python, using the built-in zip() function!
numberlist = [1, 2, 3]
val_list = [4, 5, 6]
mydictionary = dict(zip(numberlist,val_list))
This will create a dictionary with numberlistas the key and val_list as the value.
>>> mydictionary
{1: 4, 2: 5, 3: 6}
>>> mydictionary[1]
4
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