[2**x  for x in range(9)]

list(range(9))

dalist = "the quick brown fox jumped over the lazy dog".split()

dalist

[word.title()   for word in dalist ]

[ [word.title(), len(word)]   for word in dalist ]

[ len(word)   for word in dalist ]

def test1():
    return "OK"

def test2():
    return "FAIL"

def test3 ():
    return "OK"

tests = [test1, test2, test3]

tests

test_run = [t()    for t in tests]

test_run

import re
def password_length_is_ok(passw):
    if 8<len(passw)<12:
        return "OK"
    else:
        return "Bad length"
    
def has_special_characters(paslensw):
    if re.match(r"[\@\#\$\%\^\&\*]", passw):
        return "OK"
    else:
        return "missing special characters"
    

password_checks = [password_length_is_ok, has_special_characters]

password = "1234567890"
password_checks_run = [check(password) for check in password_checks ]

password_checks_run

password_checks_run = [ [check.__name__, check(password)] for check in password_checks ]

password_checks_run

len(password_checks)

len(password_checks_run)

deg = [0 , 30, 45, 60, 90]

import math
deg

rad = [d * math.pi/180     for d in deg]

rad

results = [math.sin(r) for r in rad]

["{0:1.2f}".format(r) for r in results]

["{0:1.2f}".format(x) for x in  [math.sin(rad) for rad in [ d * math.pi/180 for d in deg ] ]]

["{0:1.2f}".format(math.sin(d*math.pi/180)) for d in deg]

deg = [0,30, 45, 60]

[d + 90*i for i in range(4) for d in deg ]

deg

deg2 = [d+90   for d  in deg]

deg2

deg3 = [d+90   for d  in deg2]

deg4 =  [d+90   for d  in deg3]

print(deg)
print(deg2)
print(deg3)
print(deg4)

for i in range(4):
    for d in [0, 30, 45, 60]:
        print(d + i*90)

deg360 = [ d + i*90 for i in range(4) for d in deg ]

deg360 = [ d + i*90  for d in deg  for i in range(4)]

deg360

mydict = { d : "{0:1.2f}".format(math.sin(d*math.pi/180))   for d in deg360}

mydict

[key for key,value in mydict.items()]

[value for key,value in mydict.items()]

thenums= [100, 10000, -9, 9 , -16, 16]

[math.sqrt(num) for num in thenums if num >= 0]

thenums

abs_thenums = [x if x>=0 else -x for x in thenums]

abs_thenums