# 5 Python Questions 75% Of You Probably Can’t Solve In One Line Of Code

Being able to write code in one line probably won’t guarantee you a high-paying tech job, but it sure does feel satisfying. Here are thus 5 Python questions that can usually be easily solved under normal circumstances. The catch — you need to solve it in one line of code.

# 1. Checking If A Number Is Prime

Let’s start with something not too difficult (I hope). A prime number is an integer that

1. can only be divided by 1 and itself
2. is larger than 1

Examples of prime numbers:

`2 3 5 7 11 13 17 19`

Examples of non-prime numbers (as they can be divided by another integer other than 1 or itself)

`4 6 8 9 10 12 14 15 16 18 20`

Write a function `is_prime` that takes in a positive integer `n`, and returns `True` if the `n` is a prime number and `False` otherwise. Do this in ONE line.

# 2. Checking If Maze Is Solvable

You are given mazes (2D lists) like these:

`maze1 = [    "S-#--",    "-#---",    "-#-#-",    "---#X"]maze2 = [    "S----",    "-#--#",    "---#-",    "-#-#X"]`
• The `S` character represents the starting point of the player.
• The `X` character represents the objective
• `-` characters represent roads, which the player can walk on
• `#` characters represent walls, which the player cannot walk on
• The player needs to reach the object `X` from `S`
• `S` will always be at the topmost, leftmost coordinate, but `X` can be anywhere.
• The player can only move horizontally and vertically, one step at a go.

Write a function `is_solvable(maze)` that takes in a maze, and returns `True` if the maze if solvable and `False` otherwise. A maze is solvable if it is possible for the player to get to `X` from `S`.