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unicode.py

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# Test a UTF-8 encoded literal

s = "asdf©qwer"

for i in range(len(s)):

print("s[%d]: %s %X"%(i, s[i], ord(s[i])))

# Test all three forms of Unicode escape, and

# all blocks of UTF-8 byte patterns

s = "a\xA9\xFF\u0123\u0800\uFFEE\U0001F44C"

for i in range(-len(s), len(s)):

print("s[%d]: %s %X"%(i, s[i], ord(s[i])))

print("s[:%d]: %d chars, '%s'"%(i, len(s[:i]), s[:i]))

for j in range(i, len(s)):

print("s[%d:%d]: %d chars, '%s'"%(i, j, len(s[i:j]), s[i:j]))

print("s[%d:]: %d chars, '%s'"%(i, len(s[i:]), s[i:]))

# Test UTF-8 encode and decode

enc = s.encode()

print(enc, enc.decode() == s)

# printing of unicode chars using repr

# NOTE: for some characters (eg \u10ff) we differ to CPython

print(repr('a\uffff'))

print(repr('a\U0001ffff'))

# test invalid escape code

try:

eval('"\\U00110000"')

except SyntaxError:

print('SyntaxError')

# test unicode string given to int

try:

int('\u0200')

except ValueError:

print('ValueError')