Python写経（ループと条件）

dict = { 'key1': 123, 'key2': 456, 'key3': 789 }
for key, value in dict.items():
    print(key, value)

list = [ 123, 456, 789 ]
for index, value in enumerate(list):
    print(index, value)

seq1 = [ 'aaa', 'bbb', 'ccc' ]
seq2 = [ 'xxx', 'yyy', 'zzz' ]

for t in zip(seq1, seq2):
    print(t)

for a, x in zip(seq1, seq2):
    print(a, x)

start = 0
end = 10
step = 2
for k in range(start, end, step):
    print(k)

seq = range(0, 5)

for k in seq:
    print(k)

print()

for k in reversed(seq):
    print(k)

seq = [ 3, 1, 4, 1, 5 ]

for k in seq:
    print(k)

print()

for k in sorted(seq):
    print(k)

print()

for k in sorted(set(seq)):
    print(k)

seq = [ 3, 1, 4, 1, 5 ]

if 4 in seq:
    print('Exist')
else:
    print('Not exist')

# => Exist

seq = [3, 1, 4, 1, 5, 9]

for k in seq:
    if 1 < k < 5:
        print(k)

seq = [ 0, 1, 2, 3 ]

for n in range(0,1000):
    if 0 <= n < len(seq) and seq[n] > 0:
        print(n)

seq = [ '', 0, True, False, 'Hello' ]

for x in seq:
    if x:
        print(x)