<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def hmsStrToDeg(ra):
 """Convert a string representation of RA into a float in degrees."""

    hour, min, sec = ra.split(':')
    ra_deg = hmsToDeg(int(hour), int(min), float(sec))
    return ra_deg