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@adamamyl
Last active May 21, 2026 13:47
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t9 in python — pop what you want as an arg, get t9
#!/usr/bin/env python3
import sys
# T9 keyboard mapping
T9_MAP = {
'a': '2', 'b': '2', 'c': '2',
'd': '3', 'e': '3', 'f': '3',
'g': '4', 'h': '4', 'i': '4',
'j': '5', 'k': '5', 'l': '5',
'm': '6', 'n': '6', 'o': '6',
'p': '7', 'q': '7', 'r': '7', 's': '7',
't': '8', 'u': '8', 'v': '8',
'w': '9', 'x': '9', 'y': '9', 'z': '9'
}
def to_t9(text):
"""Convert text to T9 number sequence."""
return ''.join(T9_MAP.get(char.lower(), char) for char in text)
if __name__ == '__main__':
if len(sys.argv) < 2:
print("Usage: t9 <word1> [word2] [word3] ...")
sys.exit(1)
for word in sys.argv[1:]:
print(to_t9(word))
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