Binary hex representation in mathematica and pythons
Join Stack Binary hex representation in mathematica and pythons to learn, share knowledge, and build your career. I have a string that has both binary and string characters and I would like to convert it to binary first, then to hex.
The binascii module binary hex representation in mathematica and pythons a number of methods to convert between binary and various ASCII-encoded binary representations.
Normally, you will not use these functions directly but use wrapper modules like uubase64or binhex instead. The binascii module contains low-level functions written in C for greater speed binary hex representation in mathematica and pythons are used by the higher-level modules. Other functions only accept bytes-like objects such as bytesbytearray and other objects that support the buffer protocol.
Changed in version 3. The binascii module defines the following functions:. Convert a single line of uuencoded data back to binary and return the binary data. Lines normally contain 45 binary bytes, except for the last line. Line data may be followed by whitespace. Convert binary data to a line of ASCII characters, the return value is the binary hex representation in mathematica and pythons line, including a newline char.
The length of data should be at most Convert a block of base64 data back to binary and return the binary data. More than one line may be passed at a time. The return value is the converted line, including a newline char if newline is true. The output of this function conforms to RFC Added the newline parameter. Convert a block of quoted-printable data back to binary and return the binary data.
If the optional argument header is present and true, underscores will be decoded as spaces. The return value is the converted line s.
If the optional argument quotetabs is present and true, all tabs and spaces will be encoded. If the optional argument istext is present and true, newlines are not encoded but trailing whitespace will be encoded. If the optional argument header is present and true, spaces will be encoded as binary hex representation in mathematica and pythons per RFC If the optional argument header is present and false, newline characters will be encoded as well; otherwise binary hex representation in mathematica and pythons conversion might corrupt the binary data stream.
The string should contain a complete number of binary bytes, or in case of the last portion of the binhex4 data have the remaining bits zero. Perform RLE-decompression on the data, as per the binhex4 standard.
The algorithm uses 0x90 after a byte as a repeat indicator, followed by a count. A count of 0 specifies a byte value of 0x The routine returns the decompressed data, unless data input data ends in an orphaned repeat indicator, in which case the Incomplete exception is raised.
Accept only bytestring or bytearray objects as input. The argument should already be RLE-coded, and have a length divisible by 3 except possibly the last fragment. This CRC is used in the binhex4 format.
The default initial CRC is zero. The algorithm is consistent with the ZIP file checksum. Since the algorithm is designed for use as a checksum algorithm, it is not suitable for use as a general hash algorithm. The result is always unsigned.
Return the hexadecimal representation of the binary data. Every byte of data is converted into the corresponding 2-digit hex representation. The returned bytes object is therefore twice as long as the length of data. Return the binary data represented by the hexadecimal string hexstr. Exception raised on incomplete data.
These are usually not programming errors, but may be handled by reading a little more data and trying again. Module binhex Support for the binhex format used on the Macintosh.
Module uu Support for UU encoding used on Unix. The Python Software Foundation is a non-profit corporation. Last updated on Apr 04, Created using Sphinx 1.
Join Stack Overflow to learn, share knowledge, and build your career. I want to have i. What you are actually saying is that you have a value in a hexadecimal representation, and you want to represent an equivalent value in binary.
The value of equivalence is an integer. But you may begin with a string, and to view in binary, you must end with a string. First, before we can do any binary manipulation at all, convert to int I presume this is in a string format, not as a literal:.
This uses the formatting specification's mini-language. If you actually just wanted to encode the data as a string of bytes in memory or on disk, you can use the int.
This is a slight touch up to Glen Maynard's solution, which I think is the right way to do it. It just adds the padding element. Pulled it out of a class.
Just take out self, if you're working in a stand-alone script. The number 50 will tell zfill that you want to complete the string with binary hex representation in mathematica and pythons until the string length is I added the calculation for the number of bits to fill to Onedinkenedi's solution. Here is the resulting function:. Where binary hex representation in mathematica and pythons is the base you're converting from hexadecimaland 4 is how many bits you need to represent each digit, or log base 2 of the scale.
Doesn't that mean it returns a string? Yes, it returns a string containing the bytes represented, e. Any idea how to return ""? Oh, this also omits binary hex representation in mathematica and pythons leading '0's so it may need padded for this use. If the input is "1a" this gives "", not "" which may or may not be what you want. There are an infinite number of leading zeroes on every number, so I'd hope it omits them.
It's unfortunate that it's a global builtin. It should have been int. It's quite reasonable to need the leading zeros and to not need them. You might want the null byte 0x00 to be eight zero bits for example - this is important for some applications. Also the OP has a leading zero in his example but I suspect that's just random in this case!
Simple 2 3. John La Rooy k 33 Markus 1, 1 10 The new f-strings in Python 3. Convert hex to binary, 42 digits and leading zeros? We have several direct ways to accomplish this goal, without hacks using slices.
First, before we can do any binary manipulation at all, convert to int I presume this is in a string format, not as a literal: Use the builtin function, format Then pass to format: To break that down, here's the grammar form of it: They use the same mini-language formatting rules: And since 42 bits divided by 8 bits per byte equals 6 bytes: Here's a fairly raw way to do it using bit fiddling to generate the binary strings.
The key bit to understand is: John Montgomery 5, 1 24 I know this is old, but what exactly is the point of the "and 1"? It's for the old days of python before the ternary operator. We only want a one or zero, so binary hex representation in mathematica and pythons "and 1" is there to ensure that. This script worked best for me to convert a crypto private key in hex to binary for testing purposes. Does anyone know how to split the binary string into 8 bit chunks and print it out?
RobotHumans 6 MarianD 3, 5 12 Replace each hex digit with the corresponding 4 binary digits: DmitryK 4, 1 12 Or replace each pair of hex digits with the corresponding 8 binary digits, or replace each triplet of hex digits with the corresponding 12 binary digits Here is the resulting function: Edd 1, 13 John 2 Sign up or log in Sign up using Google.