word = 'helloxworld'
char_to_replace = 'x'
print(word.replace(char_to_replace, ' '))
word = 'helloxworld'
char_to_replace = 'x'
print(word.replace(char_to_replace, ' ' + char_to_replace))
d29yZCA9ICdoZWxsb3h3b3JsZCcKY2hhcl90b19yZXBsYWNlID0gJ3gnCnByaW50KHdvcmQucmVwbGFjZShjaGFyX3RvX3JlcGxhY2UsICcgJykpCgp3b3JkID0gJ2hlbGxveHdvcmxkJwpjaGFyX3RvX3JlcGxhY2UgPSAneCcKcHJpbnQod29yZC5yZXBsYWNlKGNoYXJfdG9fcmVwbGFjZSwgJyAnICsgY2hhcl90b19yZXBsYWNlKSkK