Python: Add two strings as they are numbers (Positive integer values)
Python String: Exercise-101 with Solution
Write a Python program to add two strings as they are numbers (Positive integer values). Return a message if the numbers are string.
Sample Solution-1:
Python Code:
def test(n1, n2):
n1, n2 = '0' + n1, '0' + n2
if (n1.isnumeric() and n2.isnumeric()):
return str(int(n1) + int(n2))
else:
return 'Error in input!'
print(test("10", "32"))
print(test("10", "22.6"))
print(test("100", "-200"))
Sample Output:
42 Error in input! Error in input!
Flowchart:
Visualize Python code execution:
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Sample Solution-2:
Python Code:
def test(n1, n2):
if n1 == '':
n1= '0'
if n2 == '':
n2 = '0'
if n1.isdigit() and n2.isdigit():
return str(int(n1)+int(n2))
return 'Error in input!'
print(test("23", "43"))
print(test("12", "11.6"))
print(test("200", "-100"))
Sample Output:
66 Error in input! Error in input!
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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Previous: Write a Python program to check whether any word in a given sting contains duplicate characrters or not. Return True or False.
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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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