Python: Get the items from a given list with specific condition
Python List: Exercise - 164 with Solution
Write a Python program to get the items from a given list with specific condition.
Number of Items of the following list which are even and greater than 73
[12,45,23,67,78,90,45,32,100,76,38,62,73,29,83]
Output:
5
Sample Solution:
Python Code:
def first_index(l1):
return sum(1 for i in l1 if (i> 45 and i % 2 == 0))
nums = [12,45,23,67,78,90,45,32,100,76,38,62,73,29,83]
print("Original list:")
print(nums)
n = 45
print("\nNumber of Items of the said list which are even and greater than",n)
print(first_index(nums))
Sample Output:
Original list: [12, 45, 23, 67, 78, 90, 45, 32, 100, 76, 38, 62, 73, 29, 83] Number of Items of the said list which are even and greater than 45 5
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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