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tpl = "i am %s" % "alex"

tpl = "i am %s age %d" % ("alex", 18)

tpl = "i am %(name)s age %(age)d" % {"name": "alex", "age": 18}

tpl = "percent %.2f" % 99.97623

tpl = "i am %(pp).2f" % {"pp": 123.425556, }

tpl = "i am %.2f %%" % {"pp": 123.425556, }

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tpl = "i am {}, age {}, {}".format("seven", 18, 'alex')

tpl = "i am {}, age {}, {}".format(*["seven", 18, 'alex'])

tpl = "i am {0}, age {1}, really {0}".format("seven", 18)

tpl = "i am {0}, age {1}, really {0}".format(*["seven", 18])

tpl = "i am {name}, age {age}, really {name}".format(name="seven", age=18)

tpl = "i am {name}, age {age}, really {name}".format(**{"name": "seven", "age": 18})

tpl = "i am {0[0]}, age {0[1]}, really {0[2]}".format([1, 2, 3], [11, 22, 33])

tpl = "i am {:s}, age {:d}, money {:f}".format("seven", 18, 88888.1)

tpl = "i am {:s}, age {:d}".format(*["seven", 18])

tpl = "i am {name:s}, age {age:d}".format(name="seven", age=18)

tpl = "i am {name:s}, age {age:d}".format(**{"name": "seven", "age": 18})

tpl = "numbers: {:b},{:o},{:d},{:x},{:X}, {:%}".format(15, 15, 15, 15, 15, 15.87623, 2)

tpl = "numbers: {:b},{:o},{:d},{:x},{:X}, {:%}".format(15, 15, 15, 15, 15, 15.87623, 2)

tpl = "numbers: {0:b},{0:o},{0:d},{0:x},{0:X}, {0:%}".format(15)

tpl = "numbers: {num:b},{num:o},{num:d},{num:x},{num:X}, {num:%}".format(num=15)