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How to write a hex value as it is to a file? [duplicate]

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0

This question already has an answer here:

• 
  How to write 1 byte to a binary file?
  
  2 answers
  
  

I need to create a file which contains only hex data.

Suppose I have an integer value 10, I want hexadecimal 'a' the value written to the file. The file should have only 1 byte size.

I tried the format, binascci.hexlify etc but it is not giving the correct solution. If I directly use hex(10), it will add 0x to the file.

If I write 25, the file will contain two characters 1 and 9 (25(dec) = 19(hex))

Kindly let me know the correct mechanism.

python

share|improve this question

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

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marked as duplicate by Aran-Fey, tripleee, martineau python
Users with the  python badge can single-handedly close python questions as duplicates and reopen them as needed.

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Mar 25 at 10:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Your question is unclear. Do you want the contents of the file to be b'a' or b'x0a' or something else?
  
  – Aran-Fey
  Mar 25 at 9:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am not familiar with the " b' " term. What I want is simple. say value = 25. I want to write value to a file. Since 25 needs only one byte, when I write it to the file it should be 1 byte long only. The file size will ultimately be 1 byte
  
  – Ison Thomas
  Mar 25 at 9:47
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Okay, let's take this step by step. Is the file supposed to be a text file, containing the letter "a"? Or is it supposed to be a binary file, containing a byte with the value 10?
  
  – Aran-Fey
  Mar 25 at 9:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It must be a binary file containing a byte with the value 10
  
  – Ison Thomas
  Mar 25 at 9:50
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  So then this answers your question, right? How can I write 1 byte to a binary file in python
  
  – Aran-Fey
  Mar 25 at 9:53
  

  
  
  
  

 | 
show 1 more comment

0

This question already has an answer here:

• 
  How to write 1 byte to a binary file?
  
  2 answers
  
  

I need to create a file which contains only hex data.

Suppose I have an integer value 10, I want hexadecimal 'a' the value written to the file. The file should have only 1 byte size.

I tried the format, binascci.hexlify etc but it is not giving the correct solution. If I directly use hex(10), it will add 0x to the file.

If I write 25, the file will contain two characters 1 and 9 (25(dec) = 19(hex))

Kindly let me know the correct mechanism.

python

share|improve this question

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

marked as duplicate by Aran-Fey, tripleee, martineau python
Users with the  python badge can single-handedly close python questions as duplicates and reopen them as needed.

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Mar 25 at 10:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Your question is unclear. Do you want the contents of the file to be b'a' or b'x0a' or something else?
  
  – Aran-Fey
  Mar 25 at 9:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am not familiar with the " b' " term. What I want is simple. say value = 25. I want to write value to a file. Since 25 needs only one byte, when I write it to the file it should be 1 byte long only. The file size will ultimately be 1 byte
  
  – Ison Thomas
  Mar 25 at 9:47
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Okay, let's take this step by step. Is the file supposed to be a text file, containing the letter "a"? Or is it supposed to be a binary file, containing a byte with the value 10?
  
  – Aran-Fey
  Mar 25 at 9:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It must be a binary file containing a byte with the value 10
  
  – Ison Thomas
  Mar 25 at 9:50
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  So then this answers your question, right? How can I write 1 byte to a binary file in python
  
  – Aran-Fey
  Mar 25 at 9:53
  

  
  
  
  

 | 
show 1 more comment

This question already has an answer here:

• 
  How to write 1 byte to a binary file?
  
  2 answers
  
  

I need to create a file which contains only hex data.

Suppose I have an integer value 10, I want hexadecimal 'a' the value written to the file. The file should have only 1 byte size.

I tried the format, binascci.hexlify etc but it is not giving the correct solution. If I directly use hex(10), it will add 0x to the file.

If I write 25, the file will contain two characters 1 and 9 (25(dec) = 19(hex))

Kindly let me know the correct mechanism.

python

share|improve this question

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

share|improve this question

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

share|improve this question

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

edited Mar 25 at 10:29

martineau

73k1010 gold badges9898 silver badges191191 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

asked Mar 25 at 9:43

Ison ThomasIson Thomas

3477 bronze badges

3 Answers
3

active

oldest

votes

0

format(10,'x')
format(25,'x')

---

output

'a'
'19'

share|improve this answer

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

add a comment | 

0

":x".format(i)

If you want to make a function out of this:

enhex = ":x".format

share|improve this answer

answered Mar 25 at 10:15

David JonesDavid Jones

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add a comment | 

0

See the hex() documentation:

>>> '%#x' % 15, '%x' % 15, '%X' % 15
('0xf', 'f', 'F')
>>> format(15, '#x'), format(15, 'x'), format(15, 'X')
('0xf', 'f', 'F')
>>> f'15:#x', f'15:x', f'15:X'
('0xf', 'f', 'F')

share|improve this answer

edited Mar 25 at 10:21

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  They are now a single byte.
  
  – Jurgen Strydom
  Mar 25 at 10:21
  

  
  
  
  

add a comment | 

0

format(10,'x')
format(25,'x')

---

output

'a'
'19'

share|improve this answer

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

add a comment | 

0

format(10,'x')
format(25,'x')

---

output

'a'
'19'

share|improve this answer

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

add a comment | 

format(10,'x')
format(25,'x')

---

output

'a'
'19'

share|improve this answer

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

format(10,'x')
format(25,'x')

'a'
'19'

share|improve this answer

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

answered Mar 25 at 10:13

paradoxparadox

47255 silver badges1212 bronze badges

0

":x".format(i)

If you want to make a function out of this:

enhex = ":x".format

share|improve this answer

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

add a comment | 

0

":x".format(i)

If you want to make a function out of this:

enhex = ":x".format

share|improve this answer

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

add a comment | 

":x".format(i)

If you want to make a function out of this:

enhex = ":x".format

share|improve this answer

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

":x".format(i)

enhex = ":x".format

share|improve this answer

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

answered Mar 25 at 10:15

David JonesDavid Jones

2,2141919 silver badges3232 bronze badges

0

See the hex() documentation:

>>> '%#x' % 15, '%x' % 15, '%X' % 15
('0xf', 'f', 'F')
>>> format(15, '#x'), format(15, 'x'), format(15, 'X')
('0xf', 'f', 'F')
>>> f'15:#x', f'15:x', f'15:X'
('0xf', 'f', 'F')

share|improve this answer

edited Mar 25 at 10:21

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  They are now a single byte.
  
  – Jurgen Strydom
  Mar 25 at 10:21
  

  
  
  
  

add a comment | 

0

See the hex() documentation:

>>> '%#x' % 15, '%x' % 15, '%X' % 15
('0xf', 'f', 'F')
>>> format(15, '#x'), format(15, 'x'), format(15, 'X')
('0xf', 'f', 'F')
>>> f'15:#x', f'15:x', f'15:X'
('0xf', 'f', 'F')

share|improve this answer

edited Mar 25 at 10:21

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  They are now a single byte.
  
  – Jurgen Strydom
  Mar 25 at 10:21
  

  
  
  
  

add a comment | 

See the hex() documentation:

>>> '%#x' % 15, '%x' % 15, '%X' % 15
('0xf', 'f', 'F')
>>> format(15, '#x'), format(15, 'x'), format(15, 'X')
('0xf', 'f', 'F')
>>> f'15:#x', f'15:x', f'15:X'
('0xf', 'f', 'F')

share|improve this answer

edited Mar 25 at 10:21

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

>>> '%#x' % 15, '%x' % 15, '%X' % 15
('0xf', 'f', 'F')
>>> format(15, '#x'), format(15, 'x'), format(15, 'X')
('0xf', 'f', 'F')
>>> f'15:#x', f'15:x', f'15:X'
('0xf', 'f', 'F')

share|improve this answer

edited Mar 25 at 10:21

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges

answered Mar 25 at 9:46

Jurgen StrydomJurgen Strydom

85655 silver badges1515 bronze badges