Is there a field or a function that would return all ASCII characters in python's standard library?
The entire ASCII table contains 128 characters.
ASCII is a 7-bit code, representing 128 different characters. When an ascii character is stored in a byte the most significant bit is always zero. Sometimes the extra bit is used to indicate that the byte is not an ASCII character, but is a graphics symbol, however this is not defined by ASCII.
ASCII is a 7-bit code - one bit (binary digit) is a single switch that can be on or off, zero or one. Character sets used today in the US are generally 8-bit sets with 256 different characters, effectively doubling the ASCII set. One bit can have 2 possible states.
You can make one.
ASCII = ''.join(chr(x) for x in range(128))
If you need to check for membership, there are other ways to do it:
if c in ASCII: # c is an ASCII character if c <= '\x7f': # c is an ASCII character
If you want to check that an entire string is ASCII:
def is_ascii(s): """Returns True if a string is ASCII, False otherwise.""" try: s.encode('ASCII') return True except UnicodeEncodeError: return False
You can use the string
module:
import string print string.printable
which gives:
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~ \t\n\r\x0b\x0c'
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