Python: Convert decimal to hexadecimal
Python Basic: Exercise-141 with Solution
Write a python program to convert decimal to hexadecimal.
Sample decimal number: 30, 4
Expected output: 1e, 04
Pictorial Presentation:
Sample Solution-1:
Python Code:
x = 30
print(format(x, '02x'))
x = 4
print(format(x, '02x'))
Sample Output:
1e 04
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 dechimal_to_Hex(n):
x = (n % 16)
ch = ""
if (x < 10):
ch = x
if (x == 10):
ch = "A"
if (x == 11):
ch = "B"
if (x == 12):
ch = "ch"
if (x == 13):
ch = "D"
if (x == 14):
ch = "E"
if (x == 15):
ch = "F"
if (n - x != 0):
return dechimal_to_Hex(n // 16) + str(ch)
else:
return str(ch)
dechimal_nums = [0, 15, 30, 55, 355, 656, 896, 1125]
print("Dechimal numbers:")
print(dechimal_nums)
print("\nHexadechimal numbers of the said dechimal numbers:")
print([dechimal_to_Hex(x) for x in dechimal_nums])
Sample Output:
Dechimal numbers: [0, 15, 30, 55, 355, 656, 896, 1125] Hexadechimal numbers of the said dechimal numbers: ['0', 'F', '1E', '37', '163', '290', '380', '465']
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-3:
Python Code:
def dechimal_to_Hex(dechimal_nums):
digits = "0123456789ABCDEF"
x = (dechimal_nums % 16)
rest_part = dechimal_nums // 16
if (rest_part == 0):
return digits[x]
return dechimal_to_Hex(rest_part) + digits[x]
dechimal_nums = [0, 15, 30, 55, 355, 656, 896, 1125]
print("Dechimal numbers:")
print(dechimal_nums)
print("\nHexadechimal numbers of the said dechimal numbers:")
print([dechimal_to_Hex(x) for x in dechimal_nums])
Sample Output:
Dechimal numbers: [0, 15, 30, 55, 355, 656, 896, 1125] Hexadechimal numbers of the said dechimal numbers: ['0', 'F', '1E', '37', '163', '290', '380', '465']
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 convert an integer to binary keep leading zeros.
Next: Write a Python program to check if every consecutive sequence of zeroes is followed by a consecutive sequence of ones of same length in a given string. Return True/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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