def hidden$\_$char$($input$\_$str$,$ hidden$\_$char$)$:

$\text{'}\text{'}\text{'}$

Returns True if string hidden$\_$char is found in the given string.

You may not use the keyword $\text{'}$in$\text{'}$

Arguments:

input$\_$str: a string

hidden$\_$char: the character to look for in input$\_$str

Returns: A boolean representing whether or not hidden$\_$char is in input$\_$str

$\text{'}\text{'}\text{'}$

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