Códigos Fuente de Python

ages = {

     "Juan": 20,

     "Esther": 31,

     "Anna": 25,

}

keys_only(ages) # ['Juan', 'Esther', 'Anna']

segundoMayor([11, 22, 3, 4, 22]) # 11

segundoMayor([1, 1, 1, 1, 1]) # None

x=[[1, 3, 2, 5, 7, 9, 4, 6, 8]

  ,[4, 9, 8, 2, 6, 1, 3, 7, 5]

  ,[7, 5, 6, 3, 8, 4, 2, 1, 9]

  ,[6, 4, 3, 1, 5, 8, 7, 9, 2]

  ,[5, 2, 1, 7, 9, 3, 8, 4, 6]

  ,[9, 8, 7, 4, 2, 6, 5, 3, 1]

  ,[2, 1, 4, 9, 3, 5, 6, 8, 7]

  ,[3, 6, 5, 8, 1, 7, 9, 2, 4]

  ,[8, 7, 9, 6, 4, 2, 1, 5, 3]]

print(done_or_not(x)) # 'Finished!'

deep_flatten([[[1],2],3,[4,5]])              # [1, 2, 3, 4, 5]

deep_flatten([1, [2], [[3], 4], 5])          # [1, 2, 3, 4, 5]

deep_flatten([1, 2, 3])                      # [1, 2, 3]

deep_flatten([[1], [], 2, [3,[4, 5, 6]], 7]) # [1, 2, 3, 4, 5, 6, 7]

deep_flatten([[[], []], []])                 # []

deep_flatten([1, [[], []], []])              # [1]

s[::-1]

"".join([s[i] for i in range(len(s)-1,-1,-1)])

reverse_B("the big house") # "esuoh gib eht"

randomNumbers(10) // [1, 3, 5, 2, 8, 0, 6, 9, 4, 7]

is_valid_IP("1.2.3.4") # true

is_valid_IP("123.45.67.89") # true

is_valid_IP("0.0.0.0") # true

is_valid_IP("255.255.255.255") # true

is_valid_IP("1.200.01.255") # false

is_valid_IP("1.2.3") # false

is_valid_IP("1.2.3.4.5") # false

is_valid_IP("123.456.78.90") # false

is_valid_IP("123.045.067.089") # false

countLetters("")              # {}

countLetters("xxxx")          # {'x': 4}

countLetters("xXxX")          # {'x': 4}

countLetters("the big house") # {'t': 1, 'h': 2, 'e': 2, ' ': 2, 'b': 1, 'i': 1, 'g': 1, 'o': 1, 'u': 1, 's': 1}

countLetters("1000$")         # {'1': 1, '0': 3, '$': 1}