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print("asdf asfd")



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"asdf asdf asfd "



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print(2+3)
2+2



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a = 1230



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print(a+1)



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print(a+11)



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a = input()


print(int(a)+1)

2.3.2017



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print("xx")

xx



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list(range(10))









    Out[1]:





[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]



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int('1')









    



---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-5-3c0bffb342e5> in <module>()
----> 1 int('1a')

ValueError: invalid literal for int() with base 10: '1a'



In [3]:

    
import this









    



The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!



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1/2









    Out[5]:





0.5



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0.1









    Out[6]:





0.1



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1/10









    Out[7]:





0.1



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1//2









    Out[12]:





0



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1%2









    Out[13]:





1



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1/2









    Out[1]:





0



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1./2









    Out[2]:





0.5



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bę=1



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bę









    Out[2]:





1

asd as asfd



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# asd asd fasdf
a = 12



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if False:
    pass
print("a")
print("b")

a
b

for(int i=1;i<10;i++) { asdf asdf }



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for i in range(1,10,1):
    print(i)



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l = ['aa', 1 ,2, 2323,'ble']



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l[:2:2]









    Out[36]:





['aa']



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for i in range(0,len(l),1) :
    print(i,l[i])



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i = 0
for el in l:
    print(i,el)
    i+=1



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for i,el in enumerate(l):
    print(i,el)



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list( enumerate(l) )









    Out[41]:





[(0, 'aa'), (1, 1), (2, 2), (3, 2323), (4, 'ble')]



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l.append("$Asdfasdf")



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l









    Out[60]:





['1', '2', '2323', 'Asdfasdf', 'aa', 'ble', '$Asdfasdf']



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l.reverse()



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l









    Out[62]:





['$Asdfasdf', 'ble', 'aa', 'Asdfasdf', '2323', '2', '1']



In [63]:

    
l.sort()



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l = list(map(str,l))
l.sort()



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l









    Out[65]:





['$Asdfasdf', '1', '2', '2323', 'Asdfasdf', 'aa', 'ble']



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l.sort?



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l = ['a',1,2]



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l.sort(key=lambda x:str(x))



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l









    Out[70]:





[1, 2, 'a']



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import numpy 
import math



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sin(1)









    



---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-78-93e746b069d9> in <module>()
----> 1 sin(1)

NameError: name 'sin' is not defined



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len(dir(numpy))









    Out[74]:





600



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len(dir(math))









    Out[77]:





54



In [79]:

    
math.sin(1)









    Out[79]:





0.8414709848078965



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numpy.sin(1)









    Out[80]:





0.8414709848078965



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numpy.sin?



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numpy.sin([1,2,3])









    Out[82]:





array([ 0.84147098,  0.90929743,  0.14112001])



In [83]:

    
math.sin(1)









    Out[83]:





0.8414709848078965



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math.sin([1,2,3])









    



---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-84-fa0f50f7ee9c> in <module>()
----> 1 math.sin([1,2,3])

TypeError: a float is required



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from math import sin,cos



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import numpy,math



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import numpy as np



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np.sin?



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from math import *



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help(sin)









    



Help on built-in function sin in module math:

sin(...)
    sin(x)
    
    Return the sine of x (measured in radians).



In [101]:

    
def mojsin(x):
    """
    To jest mój Narodowy sinus!
    """
    return sin(x)



In [103]:

    
np.sin?



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