Python Math: Round up a number to specified digits
Python Math: Exercise-69 with Solution
Write a Python function to round up a number to specified digits.
Sample Solution:-
Python Code:
import math
def roundup(a, digits=0):
n = 10**-digits
return round(math.ceil(a / n) * n, digits)
x = 123.01247
print("Original Number: ",x)
print(roundup(x, 0))
print(roundup(x, 1))
print(roundup(x, 2))
print(roundup(x, 3))
Sample Output:
Original Number: 123.01247 124 123.1 123.02 123.013
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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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