string = "bridge"
"my string is {<ref>}".format(string)
c2e6857f82e45f30141c1cb4c48dea6c66fb55cb
<mask token>

<mask token>
"""my string is {<ref>}""".format(string)

string = 'bridge'
"""my string is {<ref>}""".format(string)

string = "bridge"
"my string is {<ref>}".format(string)