result = []
terms = ['term1','term2','term3','term4']
text = 'term1 :value1term2 :value2term3 :term4 :value4'
for (i, term) in enumerate(terms):
    # Strip everything before current terminal
    t = text.split(term)[1]
    """
    if i == 0:
        t = text.lstrip(term)
    else:
        t = text.split(term)[1]
    """
    # Strip the next terminal and everything after it
    if i != len(terms)-1:
        t = t.split(terms[i+1])[0]
    t = t.lstrip(" :")
    result.append(t)
print(result)