lesson1Title

lesson2Title

lesson3Title

lesson4Title

lesson5Title

lesson6Title

lesson7Title

lesson8Title

lesson9Title

lesson10Title

lesson11Title

lesson12Title

lesson13Title

lesson14Title

lesson15Title

lesson16Title

lesson17Title

lesson18Title

lesson19Title

pythonIntroStep1Chapter4Title

lesson20Title

lesson21Title

pythonIntroStep1Chapter1Title

pythonIntroStep1Chapter2Title

pythonIntroStep1Chapter3Title

When using the 'format()' function, indexes or keywords can be used inside the curly braces '{}'. In this example, '{0}' and '{1}' are replaced by the first and second arguments of the 'format()' function, respectively. Therefore, the answer is 'Hello, {0}! Today is {1}.' .format('John', 'Tuesday').

An 'IndexError' occurs when the number of parameters provided to the 'format()' function is less than the number of curly braces in the string. In this case, there is no parameter for the third curly brace '{2}', which leads to an 'IndexError'.

To display only two decimal places using the 'format()' function, you should use the ':.2f' format. Here, 'f' stands for floating point number, and '.2' indicates that only two decimal places are to be shown. Thus, the answer is '{0:.2f}'.format(123.4567).

Please choose from the answers below.