How can I get Python to use upper case letters when printing hexadecimal values?

Capital X (Python 2 and 3 using sprintf-style formatting):

print("0x%X" % value)

Or in python 3+ (using .format string syntax):

print("0x{:X}".format(value))

Or in python 3.6+ (using formatted string literals):

print(f"0x{value:X}")

Just use upper().

intNum = 1234
hexNum = hex(intNum).upper()
print('Upper hexadecimal number = ', hexNum)

Output:

Upper hexadecimal number =  0X4D2

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