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def shift_char(char, delta):
base_ord = ord('a')
return chr(base_ord + (ord(char) - base_ord + delta) % 26)
def to_encrypt(text, delta):
char_list = [shift_char(i, delta) if 'a' <= i <= 'z' else i for i in text]
return ''.join(char_list)
if __name__ == '__main__':
print("Example:")
print(to_encrypt('abc', 10))
# These "asserts" using only for self-checking
# and not necessary for auto-testing
assert to_encrypt("a b c", 3) == "d e f"
assert to_encrypt("a b c", -3) == "x y z"
assert to_encrypt("simple text", 16) == "iycfbu junj"
assert to_encrypt("important text", 10) == "swzybdkxd dohd"
assert to_encrypt("state secret", -13) == "fgngr frperg"
print("Coding complete? Click 'Check' to earn cool rewards!")