string formatting

%s: a placeholder for a string

%s is used as a placeholder for string values you want inject into a formatted string.

%d is used as a placeholder for numeric or decimal values.

name = "QC"
job = "SDE"
info = """
----------- info of %s -------------
name: %s
job: %s
""" % (name, name, job)

print(info)

info2 = """----------- info of  {_name}-------------
name: {_name}
job: {_job}
""" .format(_name = name, _job = job)

print(info2)

info3 = """----------- info of  {0}-------------
name: {0}
job: {1}
""" .format( name, job)

print(info3)