__author__ = 'mare' print(1) print('hi, guyz') a = 'hello\n' print(a) #1 #hi, guyz #hello x=0.2 print(x) str(x) print( str(x) ) a = repr('hello\n') print(a) #0.2 #0.2 #hello\n print(x, 'test') print(a + 'this is test') #0.2 test #'hello\n'this is test import sys print("welcome","to","python", sep="~", end="!") #welcome~to~python! #print("welcome","to","python", sep="~", end="!", file=sys.stderr) #/Library/Frameworks/Python.framework/Versions/3.3/bin/python3 /Users/mare/PycharmProjects/input_output/example.py #1 #welcome~to~python! ########### #alienment print('\n') for x in range(1, 6): print(x, '*', x, '=', x*x) #1 * 1 = 1 #2 * 2 = 4 #3 * 3 = 9 #4 * 4 = 16 #5 * 5 = 25 #using rjust for alienment for x in range(1, 6): print(x, '*', x, '=', str(x*x).rjust(4)) #1 * 1 = 1 #2 * 2 = 4 #3 * 3 = 9 #4 * 4 = 16 #5 * 5 = 25 #zfill example for x in range(1, 6): print(x, '*', x, '=', str(x*x).zfill(3)) #1 * 1 = 001 #2 * 2 = 004 #3 * 3 = 009 #4 * 4 = 016 #5 * 5 = 025 #### #formatting print( "{0} is {1}".format("apple", "red")) print("{0} is {1} or {2}".format("apple", "red", "green")) #apple is red #apple is red or green print("{item} is {color}".format(item="apple", color="red")) #apple is red dic = {"item":"apple", "color":"red"} print("{0[item]} is {0[color]}".format(dic)) #apple is red #using local variables item = "apple" color = "red" print("{0[item]} is {0[color]}".format(locals())) #apple is red print("{0:$=5}".format(10)) #$$$10 print("{0:$<5}".format(10)) print("{0:$>5}".format(10)) #10$$$ #$$$10 print("{0:q<5}".format(10)) print("{0:q>5}".format(10)) #10qqq #qqq10 print("{0:#<5}".format(10)) print("{0:#>5}".format(10)) #10### ####10 print("{0:#^6}".format(10)) ##10## print("{0:x}".format(10)) print("{0:b}".format(10)) print("{0:o}".format(10)) print("{0:c}".format(65)) #a #1010 #12 #A print("{0:#x}, {0:#o}, {0:#b}".format(10)) #0xa, 0o12, 0b1010 print("{0:e}".format(4/3)) #1.333333e+00 print("{0:f}".format(4/3)) print("{0:%}".format(4/3)) #1.333333 #133.333333% print("{0:.3f}".format(4/3)) #1.333 #input #a = input('insert any key:') #print(a) #insert any key:sadfsaf #sadfsaf #file input/output f= open('test.txt') print(f.read()) f.close() print( f.closed ) #binary mode and file copy f = open('Horse2.mp3', 'wb') f.write(open('Horse.mp3','rb').read()) f.close() f = open('test.txt') print( f.read() ) print( f.read() ) print( f.tell() ) #return position print( f.seek(0) ) #move to position print( f.read() ) #read again f.seek(0) print( f.readline() ) print( f.readline() ) print( f.readline() ) f.seek(0) print( f.readlines() ) f.close() """ I am boy Who are you Hello~ world I am boy Who are you Hello~ world ['I am boy\n', 'Who are you\n', 'Hello~ world\n'] """ with open('test.txt') as f: print(f.readlines()) print(f.closed) #not close print(f.closed) #closed because if use with keyword, when escape with block file is colsed automatically #['I am boy\n', 'Who are you\n', 'Hello~ world\n'] #False #True #### #pickle, save variables or class colors = ['red', 'green', 'black'] import pickle f = open('colors', 'wb') pickle.dump( colors, f) f.close() del colors f = open('colors', 'rb') #note! must read by binary colors = pickle.load(f) f.close() print( colors ) #['red', 'green', 'black']
2/07/2014
(python Study) input/output and file handle (example source code)
2/05/2014
(Mac Tip) How to make new txt file in Finder
On the window, we made new file easily by right button click.
But on the mac, there is no function. So, very incompatible...
By the way, we can do make new file easily on Mac by using this app
The usage is as follows..
After install,
run App.
But on the mac, there is no function. So, very incompatible...
By the way, we can do make new file easily on Mac by using this app
The usage is as follows..
After install,
run App.
Select Gestures and Keyboard menu,
And click +Add New Shortcut
And click keyboard shortcut and make shortcut key combination
After, click trigger predefined action, and select system actions->create new file in current folder.
Setting is done.
New, make new file in folder by the shortcut key.
Good luck~!!
(python study) about exception (example source code)
exception running structure is like that
see the example source code carefully referencing this structure.
...
see the example source code carefully referencing this structure.
...
__author__ = 'mare' #exception test def divide(a, b): return a/b try: c = divide(5,0) except: print("Exception is occured!!") #-> Exception is occured!! try: c = divide(5, 'string') except ZeroDivisionError: print('donot input zero parameter') except TypeError: print('all parameter should be number!') except: print('I don know what error occur') #->all parameter should be number! try: c = divide(5, 2) except ZeroDivisionError: print('do not input zero parameter') except TypeError: print('all parameter should be only number') except: print('ZeroDivisionError, exception TypeError') else: print('Result: {0}'.format(c) ) finally: print('This sentence is always printed') #Result: 2.5 #This sentence is always printed try: c = divide(5, "af") except TypeError as e: print('error: ', e.args[0] ) except Exception: print('I do not know what error occur') #error: unsupported operand type(s) for /: 'int' and 'str' try: c = divide(5, 0) except (ZeroDivisionError, OverflowError, FloatingPointError, FloatingPointError): print('this error is relative to arithmetic') except TypeError: print('all parameter should be only number') except Exception: print('I do not know what error occur') #this error is relative to arithmetic try: c = divide(5, 0) except ArithmeticError: print('this error is relative to arithmetic') except TypeError: print('all parameter should be only number') except Exception: print('I do not know what error occur') #this error is relative to arithmetic #raise : uesr error message send def RaiseErrorFunc(): raise NameError try: RaiseErrorFunc() except: print("name error is catched") #--------------user error exception class NegativeDivisionError(Exception): def __init__(self, value): self.value = value def PositiveDivide(a, b): if(b < 0): raise NegativeDivisionError(b) return a/b try: ret = PositiveDivide(10, -3) print('10 / 3 = {0}'.format(ret)) except NegativeDivisionError as e: print('Error - second argument of positiveDivide is ', e.value) except ZeroDivisionError as e: print('Error - ', e.args[0] ) except: print("Unexpected exception!") #Error - second argument of positiveDivide is -3 ## assert function def foo(x): assert type(x) == int, "input value must be integer" return x*10 ret = foo("a") print( ret ) """ Traceback (most recent call last): File "/Users/mare/PycharmProjects/ㄷㅌㅊ데샤ㅐㅜ/pypy.py", line 124, in < module > ret = foo("a") File "/Users/mare/PycharmProjects/ㄷㅌㅊ데샤ㅐㅜ/pypy.py", line 121, in foo AssertionError: input value must be integer """---
2/03/2014
(Python Study) about Module (example source code)
The reason to use module is like that
Concise code
namespace differently
fast execution of a function
The module in python is similar with #include in C
To make module, make .py file.
...
and copy this file to lib folder.
In my case lib is located in "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3"
Additionally, my computer is mac.
...
Concise code
namespace differently
fast execution of a function
The module in python is similar with #include in C
To make module, make .py file.
...
""" import math print( math.pow(2, 10) ) print( math.log(100) ) """ #make user module from functools import * #bring functools module to use reduce function def intersect(*ar): return reduce( __intersectSC, ar ) def __intersectSC( listX, listY): setList = [] for x in listX: if x in listY: setList.append(x) return setList def difference(*ar): setList = [] intersectSet = intersect(*ar) unionSet = union(*ar) for x in unionSet: if not x in intersectSet: setList.append(x) return setList def union(*ar): setList = [] for item in ar: for x in item: if not x in setList: setList.append(x) return setList #save *.py and copy to python32\lib directory #and bring this source code using import command---
and copy this file to lib folder.
In my case lib is located in "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3"
Additionally, my computer is mac.
And import this file.
import simpleset print( dir(simpleset) ) setA = [1, 3, 7, 10] setB = [2, 3, 4, 9] print( simpleset.union(setA, setB) ) print( simpleset.intersect(setA, setB, [1, 2, 3] )) #[1, 3, 7, 10, 2, 4, 9] #[3]---
(Window 2008) disable port 80 on the window 2008 os
I have to close the programs using port 80 to setup APM(Apache, PHP, Mysql)
But I cannot find which program use port 80 on the window 2008 environment.
After a long time later, I figured out the solution.
The method is like that
Control Panel> Administrative Tools> Services to find information about the following 'stop'
Properties in 'Manual' to change.
World Wide Web Publishing Service
SQL Server Integration Services 10.0
SQL Server Reporting Services (MSSQL SERVER)
If not this should not conflict with port 80, the user of MS SQL
1. Start> Programs> Microsoft SQL Server 2008> Configuration Tools> Reporting Services Configuration Manager, run
2. Server Connection
3. In the left menu 'Web service URL', the right to use port 80. -> Change to a different port
good luck~!!
But I cannot find which program use port 80 on the window 2008 environment.
After a long time later, I figured out the solution.
The method is like that
Control Panel> Administrative Tools> Services to find information about the following 'stop'
Properties in 'Manual' to change.
World Wide Web Publishing Service
SQL Server Integration Services 10.0
SQL Server Reporting Services (MSSQL SERVER)
If not this should not conflict with port 80, the user of MS SQL
1. Start> Programs> Microsoft SQL Server 2008> Configuration Tools> Reporting Services Configuration Manager, run
2. Server Connection
3. In the left menu 'Web service URL', the right to use port 80. -> Change to a different port
good luck~!!
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This is dithering example, it make image like a stippling effect. I referenced to blew website. wiki page: https://en.wikipedia.org/wik...
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Image size of origin is 320*240. Processing time is 30.96 second took. The result of stitching The resul...
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As you can see in the following video, I created a class that stitching n cameras in real time. https://www.youtube.com/user/feelmare/sear...
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Background subtractor example souce code. OpenCV support about 3 types subtraction algorithm. Those are MOG, MOG2, GMG algorithms. Det...
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make well divided linear coordinate And make pair coordinate Please see code for detail explanation. import numpy as np import cv2 ...
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RTSP(Real Time Streaming Protocol) is video streaming, it usually sent from network camera. VideoCapture function in opencv also can get r...
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//Singular value decomposition : Mat w, u, v; SVDecomp(data, w, u, v); // A = U W V^T //The flags cause U and V to be returned transpose...
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Logistic Classifier The logistic classifier is similar to equation of the plane. W is weight vector, X is input vector and y is output...
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* Introduction - The solution shows panorama image from multi images. The panorama images is processing by real-time stitching algorithm...
