Python: Check whether a specified value is contained in a group of values
Python Basic: Exercise-25 with Solution
Write a Python program to check whether a specified value is contained in a group of values.
Test Data:
3 -> [1, 5, 8, 3] : True
-1 -> [1, 5, 8, 3] : False
Pictorial Presentation:
Sample Solution-1:
Python Code:
def is_group_member(group_data, n):
for value in group_data:
if n == value:
return True
return False
print(is_group_member([1, 5, 8, 3], 3))
print(is_group_member([5, 8, 3], -1))
Sample Output:
True False
Flowchart:
Visualize Python code execution:
The following tool visualize what the computer is doing step-by-step as it executes the said program:
Sample Solution-2:
Python Code:
def is_group_member(group_data, n):
return n in group_data
print(is_group_member([1, 5, 8, 3], 3))
print(is_group_member([5, 8, 3], -1))
Sample Output:
True False
Flowchart:
Visualize Python code execution:
The following tool visualize what the computer is doing step-by-step as it executes the said program:
Python Code Editor:
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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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