List of numbers from 1 to N in Python
This tutorial will discuss how to create a list of numbers from 1 to some specified number.
Create a user-defined function to create a list of numbers from 1 to N
This method will take the desired number from the user and foriterate until that number using a loop. In each iteration, we will increment the value and append that number to the list.
The following code will explain this.
def createList(n):
lst = []
for i in range(n + 1):
lst.append(i)
return lst
print(createList(10))
Output:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Use range()the function to create a list of numbers from 1 to N.
range()The function is very commonly used in Python. It returns a sequence between two numbers given in the function arguments. If not specified, it defaults to 0. It also has a stepparameter called which can specify the increment, which is 1 by default.
In the following code, we will use this function to generate a list of numbers.
lst = list(range(1, 10 + 1))
print(lst)
Output:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Note list()the use of the function. It ensures that the final result appears in list form. Also, note the use of +1to ensure that the final number is also included in the list.
We can also range()use list comprehension method with function. List comprehension is a simple and clear way to create lists in Python.
The method looks like this:
lst = [i for i in range(1, 10 + 1)]
print(lst)
Output:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
numpy.arange()Create a list of numbers from 1 to N
using
NumPyThe module has many useful methods to create and modify arrays. arange()The function in this module is similar to the function discussed earlier range(). The final output is a numpy array.
We will implement this functionality in the code below.
import numpy as np
lst = list(np.arange(1, 10 + 1))
print(lst)
Output:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
We also use list()the function to convert the final output into list form.
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