A咖來D賽

def 定義function

varalex = {'name' : 'alex', 'age' : 25, 'workhistor' : ['god','rice bug','dreamwork'], 'demensition' : {'height' : 176, 'weight' : 66}}
print varalex

print varalex.keys()

print varalex.values()

print varalex.items()

# Result:

{'demensition': {'weight': 66, 'height': 176}, 'age': 25, 'name': 'alex', 'workhistor': ['god', 'rice bug', 'dreamwork']}

['demensition', 'age', 'name', 'workhistor']

[{'weight': 66, 'height': 176}, 25, 'alex', ['god', 'rice bug', 'dreamwork']]

[('demensition', {'weight': 66, 'height': 176}), ('age', 25), ('name', 'alex'), ('workhistor', ['god', 'rice bug', 'dreamwork'])]

{}更多的使用  #是單行註解

varalex = {'name' : 'alex', 'age' : 25, 'workhistory' : ['god','rice bug','dreamwork'], 'demensition' : {'height' : 176, 'weight' : 66}}

print varalex.keys()

print varalex.values()

print varalex.items()

varalex['favoritecolor'] = 'green' #add another keys

print varalex.keys()

varalex.pop('favoritecolor') # remove key

print varalex.keys()

print varalex['name'] in ['alex','wong','wu'] #check

varalex['name'] = 'awesome' #change name

print varalex['name']

varalex['workhistory'][0] = 'animation designer' #change job

print varalex['workhistory']

varalex['workhistory'].append('buesiness man') #add job

print varalex['workhistory']

# Result:

['demensition', 'age', 'name', 'workhistory']

[{'weight': 66, 'height': 176}, 25, 'alex', ['god', 'rice bug', 'dreamwork']]

[('demensition', {'weight': 66, 'height': 176}), ('age', 25), ('name', 'alex'), ('workhistory', ['god', 'rice bug', 'dreamwork'])]

['demensition', 'age', 'favoritecolor', 'name', 'workhistory']

['demensition', 'age', 'name', 'workhistory']

True

awesome

['animation designer', 'rice bug', 'dreamwork']

['animation designer', 'rice bug', 'dreamwork', 'buesiness man']

多行註解'''的使用

varalex = {'name' : 'alex', 'age' : 25, 'workhistory' : ['god','rice bug','dreamwork'], 'demensition' : {'height' : 176, 'weight' : 66}}

varalex['favoritecolor'] = 'green' #add another keys

varalex.pop('favoritecolor') # remove key

varalex['name'] = 'awesome' #change name

varalex['workhistory'][0] = 'animation designer' #change job

varalex['workhistory'].append('buesiness man') #add job

'''

print varalex ['name']

print varalex ['age']

'''

# Result:

變化 兩個功能之間運用#作切換

varalex = {'name' : 'alex', 'age' : 25, 'workhistory' : ['god','rice bug','dreamwork'], 'demensition' : {'height' : 176, 'weight' : 66}}

#'''

print varalex ['name'] #function one

'''

print varalex ['age'] #function two

#'''

# Result:

alex

varalex = {'name' : 'alex', 'age' : 25, 'workhistory' : ['god','rice bug','dreamwork'], 'demensition' : {'height' : 176, 'weight' : 66}}

'''

print varalex ['name'] #function one

'''

print varalex ['age'] #function two

#'''

# Result:

25

if 判斷

varalex = 'green'

varalexlist = ['green','blue','white','red']

varalexcolors =['black','green','white','red','orange']

if varalex in varalexlist:

    print 'found %s' % varalex #add tab

# Result:

found green

else 應用

varalex = 'green'

varalexlist = ['green','blue','white','red']

varalexcolors =['black','green','white','red','orange']

varalex = 'alex'

if varalex in varalexlist:

    print 'found %s' % varalex  #add tab

else:

    print 'the %s not a valid color' %varalex #add tab

# Result:

the alex not a valid color

elif 應用

varalex = 'green'

varalexlist = ['green','blue','white','red']

varalexcolors =['black','green','white','red','orange']

varalex = 'black'

if varalex in varalexlist:

    print 'found %s' % varalex

elif varalex in varalexcolors:

    varalexlist.append(varalex)

    print 'adding %s to varalexlist' %varalex

    print varalexlist

else:

    print 'the %s not a valid color' %varalex

# Result:

adding black to varalexlist

['green', 'blue', 'white', 'red', 'black']

IF IF 應用

varalexlist = ['green','blue','white','red']

varalexcolors =['black','green','white','red','orange']

varalex = 'black'

if varalex in varalexcolors:

  if varalex in varalexlist:

    print 'OK, %s is work' %varalex

  else:

    print 'woops, %s is not a volid color' %varalex

else:

  print 'the %s can not work' %varalex

# Result:

woops, black is not a volid color

for in應用

for item in range(0,10):

print item

# Result:

0

1

2

3

4

5

6

7

8

9

varalex = 'floccinaucinihilipilification'

for charalex in varalex:

print charalex

# Result:

f

l

o

c

c

i

n

a

u

c...太長跳過

varalex = 'floccinaucinihilipilification'

for charalex in varalex:

print charalex *3

# Result:

fff

lll

ooo

ccc

ccc

iii ...太長跳過

for in + if in 應用

alexlist = ['even','today','is','very','hot','but',"i'm",'still','have','fun']
varnumfor = 0

varnumif = 0

print ' '.join(alexlist)

alexcommon = []

for varalex in alexlist:

varnumfor += 1

if varalex in ['i','would','like','to','go','with','u','guys','because','we','will','have','fun']:

alexcommon.append(varalex)

varnumif += 1

print str(alexcommon) +' ifin runs %s times' %varnumif

print ' ifin runs %s times' %varnumif + ' and forin runs %s times' %varnumfor

if varnumif !=0:

print ' ifin totally runs %s times' %varnumif

print ' forin totally runs %s times' %varnumfor

# Result:

even today is very hot but i'm still have fun

ifin runs 0 times and forin runs 1 times

ifin runs 0 times and forin runs 2 times

ifin runs 0 times and forin runs 3 times

ifin runs 0 times and forin runs 4 times

ifin runs 0 times and forin runs 5 times

ifin runs 0 times and forin runs 6 times

ifin runs 0 times and forin runs 7 times

ifin runs 0 times and forin runs 8 times

['have'] ifin runs 1 times

ifin runs 1 times and forin runs 9 times

['have', 'fun'] ifin runs 2 times

ifin runs 2 times and forin runs 10 times

ifin totally runs 2 times

forin totally runs 10 times

數質計算

varalex = []

for alexitem in range(0,20):

if alexitem % 2 == 1:

varalex.append(alexitem)

print varalex

# Result:

[1, 3, 5, 7, 9, 11, 13, 15, 17, 19]

alexdict = {'x' : 100, 'y' : 200, 'z' : 300}

for wu in alexdict.keys():

alexdict[wu] += 500

print wu

print alexdict

# Result:

y

x

z

{'y': 700, 'x': 600, 'z': 800}

數質計算兩種寫法

簡單的

alexlist =[]

    for alexitem in range(0,5):

        alexlist.append(alexitem)

print alexlist

比較難的

varalex = [alexitem for alexitem in range(0,5)]

print varalex

# Result:

[0, 1, 2, 3, 4]

[0, 1, 2, 3, 4]

例2

較好理解，寫比較多

alexlist =[]

    for alexitem in range(0,10):

        if alexitem % 2 ==1:

            alexlist.append(alexitem)

print alexlist

寫比較短，不好理解

varalex = [alexitem for alexitem in range(0,10) if alexitem % 2 == 1]

print varalex

# Result:

[1, 3, 5, 7, 9]

[1, 3, 5, 7, 9]

例3

alexlist =[]
for alexitem in range(0,10):

if alexitem % 2 ==1:

alexlist.append((alexitem + 21) //7)

print alexlist

varalex = [(alexitem+21) //7 for alexitem in range(0,10) if alexitem % 2 == 1]

print varalex

# Result:

[3, 3, 3, 4, 4]

[3, 3, 3, 4, 4]

while 迴圈判斷式

while 的用法只要注意條件式,成立的條件即可否則會造成無窮迴圈

upalex = 10

numbers = range(2, upalex)

varalexs = []

print numbers

while numbers:

    varalex =numbers.pop(0)

    varalexs.append(varalex)

    numbers = [n for n in numbers if n % varalex]

    print '1numbers '+str(numbers)

    print '2varalex '+str(varalex)

    print '3varalexs '+str(varalexs)

print varalexs

# Result:

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

1numbers [3, 5, 7, 9]

2varalex 2

3varalexs [2]

1numbers [5, 7]

2varalex 3

3varalexs [2, 3]

1numbers [7]

2varalex 5

3varalexs [2, 3, 5]

1numbers []

2varalex 7

3varalexs [2, 3, 5, 7]

[2, 3, 5, 7]  <---結果