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Commit2bf9895

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Cleanup
1 parentcf73671 commit2bf9895

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9 files changed

+169
-86
lines changed

9 files changed

+169
-86
lines changed

‎python_algorithms/algorithms/search/regex.py‎

Whitespace-only changes.

‎python_algorithms/enumerations/comprehensions.py‎

Lines changed: 0 additions & 34 deletions
This file was deleted.
Lines changed: 17 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,17 @@
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#### Dict Comprehension
2+
3+
my_dict= {'a':1,'b':2,'c':3}
4+
result= {k+'_key':v*2fork,vinmy_dict.items()}
5+
print(result)
6+
print(result.keys())
7+
print(result.values())
8+
print(result.items())
9+
10+
# filtering with dict comprehension
11+
fruits= ['apple','mango','banana','cherry']
12+
13+
f1={f:f.capitalize()forfinfruits}
14+
remove_this= {'apple','cherry'}
15+
# dict comprehension example to delete key:value pairs
16+
{key:f1[key]forkeyinf1.keys()-remove_this}
17+
#=> {'banana': 'Banana', 'mango': 'Mango'}

‎python_algorithms/enumerations/iterators/itertooling.py‎

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -3,13 +3,10 @@
33
fromitertoolsimportcombinations,permutations
44
fromitertoolsimportproduct,count,compress
55
fromfunctoolsimportreduce
6-
7-
86
# from itertools import ifilter
97
# from itertools import imap
108
# from itertools import izip
119

12-
1310
## groupby
1411
mylist='aaaaabbbbbccdd'#sorted
1512
# group returns a generator
@@ -27,6 +24,7 @@
2724
print({k:list(v)fork,vingroupby(mylist,
2825
key=lambdax:x['group'])})
2926

27+
3028
mylist= [
3129
{'id':1,'name':'ray' },
3230
{'id':1,'email':'ray@hotmail.com' },
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1+
## List Comprehensions
2+
matrix= [[1,2,3], [4,5,6]]
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4+
# for loop
5+
negative_matrix= []
6+
forrowinmatrix:
7+
negative_matrix.append([-nforninrow])
8+
9+
# list comprehension
10+
negative_evens_matrix= [
11+
[-nforninrow]# or negate(n)
12+
forrowinmatrix
13+
ifn%2==0
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]
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16+
fromitertoolsimportizip
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list(zip(*matrix))# returns tuples
18+
print([list(col)forcolinizip(*matrix)])
Lines changed: 55 additions & 49 deletions
Original file line numberDiff line numberDiff line change
@@ -1,63 +1,69 @@
11
# Enter your code here. Read input from STDIN. Print output to STDOUT
2-
kilos_to_pounds=lambdap:2.20462*p
3-
pounds_to_kilos=lambdak:0.453592*k
4-
pounds_to_grams=lambdap:p/1000
5-
kilos_to_grams=lambdak:k*1000
6-
meters_to_feet=lambdam:3.28084*m
7-
feet_to_meters=lambdaf:0.3048*f
8-
farenheit_to_celsius=lambdaf: (f-32.0)* (5.0/9.0)
9-
celsius_to_farenheit=lambdac: (c*9.0/5.0)+32.0
10-
112
importsys
123
importre
134

14-
thismodule=sys.modules[__name__]
15-
whitelist= {
16-
'pounds':'kilos',
17-
'kilos':'pounds',
18-
'meters':'feet',
19-
'feet':'meters',
20-
'farenheit':'celsius',
21-
'celsius':'farenheit',
22-
'volts':'gigavolts'
23-
}
24-
defis_allowed(source,dest):
25-
allowed= {
26-
source:whitelist.get(source,None)
27-
fork,vinwhitelist.items()
28-
ifsourceinwhitelistandwhitelist[source]==v
29-
}
5+
classConvert:
6+
7+
kilos_to_pounds=lambdap:2.20462*p
8+
pounds_to_kilos=lambdak:0.453592*k
9+
pounds_to_grams=lambdap:p/1000
10+
kilos_to_grams=lambdak:k*1000
11+
meters_to_feet=lambdam:3.28084*m
12+
feet_to_meters=lambdaf:0.3048*f
13+
farenheit_to_celsius=lambdaf: (f-32.0)* (5.0/9.0)
14+
celsius_to_farenheit=lambdac: (c*9.0/5.0)+32.0
15+
16+
def__call__(cls,*args,**kwargs):
17+
cls.thismodule=cls
18+
print(cls.thismodule)
3019

31-
ifnotallowed:
32-
raiseException(f'Cannot convert{source} to{dest}.')
33-
returnTrue
20+
whitelist= {
21+
'pounds':'kilos',
22+
'kilos':'pounds',
23+
'meters':'feet',
24+
'feet':'meters',
25+
'farenheit':'celsius',
26+
'celsius':'farenheit',
27+
'volts':'gigavolts'
28+
}
29+
defis_allowed(self,source,dest):
30+
print(self.__class__.__name__)
31+
allowed= {
32+
source:self.whitelist.get(source,None)
33+
fork,vinself.whitelist.items()
34+
ifsourceinself.whitelistandself.whitelist[source]==v
35+
}
3436

35-
defadd(func,source,dest):
36-
ifis_allowed(source,dest):
37-
setattr(thismodule,'{}_to_{}'.format(source,dest),func)
37+
ifnotallowed:
38+
raiseException(f'Cannot convert{source} to{dest}.')
3839
returnTrue
39-
returnFalse
40-
41-
defconvert(source,dest,value):
42-
ifis_allowed(source,dest):
43-
val=getattr(thismodule,f'{source}_to_{dest}')(value)
44-
returnval
45-
returnNone
46-
47-
print(convert('pounds','kilos',10.0)==4.53592)
48-
print(convert('kilos','pounds',10.0)==22.0462)
49-
print(convert('kilos','grams',10.0)==10000)
50-
print(convert('pounds','grams',10.0)==4535.92)
51-
print(convert('meters','feet',10.0)==32.8084)
52-
print(convert('feet','meters',10.0)==3.048)
53-
print(round(convert('farenheit','celsius',10.0),2)==-12.22)
54-
print(convert('celsius','farenheit',10.0)==50.0)
40+
41+
defadd(self,func,source,dest):
42+
ifself.is_allowed(source,dest):
43+
setattr(Convert.thismodule,'{}_to_{}'.format(source,dest),func)
44+
returnTrue
45+
returnFalse
46+
47+
defconvert(self,source,dest,value):
48+
ifself.is_allowed(source,dest):
49+
val=getattr(Convert.thismodule,f'{source}_to_{dest}')(value)
50+
returnval
51+
returnNone
52+
53+
print(Convert().convert('pounds','kilos',10.0)==4.53592)
54+
print(Convert().convert('kilos','pounds',10.0)==22.0462)
55+
print(Convert().convert('kilos','grams',10.0)==10_000)
56+
print(Convert().convert('pounds','grams',10.0)==4535.92)
57+
print(Convert().convert('meters','feet',10.0)==32.8084)
58+
print(Convert().convert('feet','meters',10.0)==3.048)
59+
print(round(Convert().convert('farenheit','celsius',10.0),2)==-12.22)
60+
print(Convert().convert('celsius','farenheit',10.0)==50.0)
5561

5662
volts_to_gigavolts=lambdav:v*0.000000001
5763
add(volts_to_gigavolts,'volts','gigavolts')
58-
print(convert('volts','gigavolts',100))
64+
print(Convert().convert('volts','gigavolts',100))
5965

6066

6167
maxwells_to_ohms=lambdae: (e**-e**2)*e**2
6268
add(maxwells_to_ohms,'maxwells','ohms')
63-
print(convert('maxwells','ohms',120))
69+
print(Convert().convert('maxwells','ohms',120))

‎python_algorithms/exceptions.py‎

Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,11 @@
1+
# Ensure variable is defined
2+
try:
3+
x
4+
exceptNameError:
5+
x=None
6+
7+
# Test whether variable is defined to be None
8+
ifxisNone:
9+
some_fallback_operation()
10+
else:
11+
some_operation(x)

‎python_algorithms/system/cli.py‎

Lines changed: 37 additions & 0 deletions
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@@ -0,0 +1,37 @@
1+
importsys
2+
importos
3+
importthreading
4+
importrequests
5+
importtime
6+
importpprint
7+
8+
prices= {'btc':0.00 }
9+
10+
iflen(sys.argv)<2:
11+
print('please supply some coins to track')
12+
quit()
13+
14+
forcoininsys.argv[1:]:
15+
prices[coin]=0.00
16+
17+
defupdate_price(coin):
18+
whileTrue:
19+
template='https://api.bittrex.com/api/v1.1/public/getticker?market={}-{}'
20+
first_coin='usd'ifcoin=='btc'else'btc'
21+
pricing=requests.get(template.format(first_coin,coin)).json()
22+
prices[coin]=pricing['result']['Last']
23+
time.sleep(3)
24+
25+
forcoin,priceinprices.items():
26+
t=threading.Thread(target=update_price,args=(coin,))
27+
t.start()
28+
29+
whileTrue:
30+
os.system('clear')
31+
forcoin,priceinprices.items():
32+
usd_price=price*prices['btc']
33+
ifcoin=='btc':
34+
print('{} -> ${:.2f}'.format(coin.ljust(5),price))
35+
else:
36+
print('{} -> {:.8f} (${:.2f})'.format(coin.ljust(5),price,usd_price))
37+
time.sleep(.5)
Lines changed: 30 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,30 @@
1+
importrequests
2+
3+
r=requests.get('https://api.github.com/events')
4+
r=requests.post('https://httpbin.org/post',data= {'key':'value'})
5+
6+
r=requests.put('https://httpbin.org/put',data= {'key':'value'})
7+
r=requests.delete('https://httpbin.org/delete')
8+
r=requests.head('https://httpbin.org/get')
9+
r=requests.options('https://httpbin.org/get')
10+
11+
# passing params
12+
payload= {'key1':'value1','key2':'value2'}
13+
r=requests.get('https://httpbin.org/get',params=payload)
14+
15+
print(r.url)
16+
#=> https://httpbin.org/get?key2=value2&key1=value1
17+
# Note that any dictionary key whose value is None will not be added to the URL’s query string.
18+
19+
# You can also pass a list of items as a value:
20+
payload= {'key1':'value1','key2': ['value2','value3']}
21+
22+
r=requests.get('https://httpbin.org/get',params=payload)
23+
print(r.url)
24+
#=> https://httpbin.org/get?key1=value1&key2=value2&key2=value3
25+
26+
# CUSTOM HEADERS
27+
url='https://api.github.com/some/endpoint'
28+
headers= {'user-agent':'my-app/0.0.1'}
29+
30+
r=requests.get(url,headers=headers)

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