Syntax: eval(expression, globals=None, locals=None)Įxample: # python 2.x - doesn't accept operators in string formatĪst.literal_eval('') # output: Īst.literal_eval('1+1') # output: ValueError: malformed stringĪst.literal_eval('')Īssert safe_eval('sqrt(16)+1') = math.sqrt(16) + 1Īssert safe_eval('1.2345 * 10') = 1. Your score and total score will always be displayed. You will get 1 point for each correct answer. If you're stuck, hit the 'Show Answer' button to see what you've done wrong.

Write a Python script to print a dictionary where the keys are numbers between 1 and 15 (both included) and the values are the square of the keys.

Try to solve an exercise by filling in the missing parts of a code. Write a Python script to generate and print a dictionary that contains a number (between 1 and n) in the form (x, xx). The string or node provided may only consist of the following Python literal structures: strings, bytes, numbers, tuples, lists, dicts, sets, booleans, None, bytes and sets. 1000+ Multiple Choice Questions & Answers on Python arranged chapterwise. We have gathered a variety of Python exercises (with answers) for each Python Chapter. Safely evaluate an expression node or a string containing a Python literal or container display. Suppose the string being evaluated is 'os.system('rm -rf /')' ? It will really start deleting all the files on your computer.

This is very powerful, but is also very dangerous if you accept strings to evaluate from untrusted input. A Python list of dictionaries is a data structure that consists of a collection of dictionaries, where each dictionary in the list has the same keys but different values.

W3schools python list of dictionaries