import compileall
import sys
def main():
newDir=sys.argv[1]+"/"+sys.argv[2]
compileall.compile_dir(newDir)
if __name__ == '__main__':
Capture PyQt5_gpl-5.10.1.tar.gz from internet.
Decompress pacage
tar xvf PyQt5_gpl-5.10.1.tar.gz
cd PyQt5_gpl-5.10.1
Execute Configurateion
python configure.py
Start to compile
make
Reference:
import os
import sys
def main():
#For loop to show 9 X 9 matrix
for i in range(1, 10, 1):
for j in range(1, 10, 1):
print(i * j, end=" ")
print()
if __name__ == '__main__':
main()
class multiplication():
def table():
#For loop to show 9 X 9 matrix
for i in range(1, 10, 1):
for j in range(1, 10, 1):
print(i * j, end=" ")
print()
if __name__ == '__main__':
a = multiplication
a.table()
class multiplication():
def table():
num1 = [1, 2, 3, 4, 5, 6, 7, 8, 9];
num2 = [1, 2, 3, 4, 5, 6, 7, 8, 9];
#For loop to show 9 X 9 matrix
for i in range(0, 9, 1):
for j in range(0, 9, 1):
print(num1[i] * num2[j], end=" ")
print()
if __name__ == '__main__':
a = multiplication
a.table()
Method 1:
Download RPi.GPIO 0.6.3
tar xvf RPi.GPIO-0.6.3.tar.gz
cd RPi.GPIO-0.6.3
Start to build the C code
python3 setup build
cd RPi.GPIO-0.6.3/build/lib.linux-armv7l-3.4
Copy RPi module to virtual environment of python
cp RPi /home/pi/env/lib/python3.4/site-packages (which env is virtual environment)
Method 2:
source ~/env/bin/activate
Download RPi.GPIO 0.6.3
tar xvf RPi.GPIO-0.6.3.tar.gz
cd RPi.GPIO-0.6.3
Start to build the C code and install binary and library file into the virtual environment of python path.
python3 setup install
Reference:
from html.parser import HTMLParser
from html.entities import name2codepoint
class MyHTMLParser(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.anchors = []
self.record = False
def handle_starttag(self, tag, attrs):
print("Start tag:", tag)
for attr in attrs:
print(" attr:", attr)
if tag == "span":
for k, v in attrs:
if k == 'style' and v == 'color: #263645; font-weight: normal;' :
self.record = True
#self.anchors.append(v)
break
def handle_endtag(self, tag):
print("End tag :", tag)
if tag =="span":
self.record = False
def handle_data(self, data):
print("Data :", data)
if self.record == True:
self.anchors.append(data)
def handle_comment(self, data):
print("Comment :", data)
def handle_entityref(self, name):
c = chr(name2codepoint[name])
print("Named ent:", c)
def handle_charref(self, name):
if name.startswith('x'):
c = chr(int(name[1:], 16))
else:
c = chr(int(name))
print("Num ent :", c)
def handle_decl(self, data):
print("Decl :", data)
f = open("1.html")
p = MyHTMLParser()
p.feed(f.read())
p.close()
print (p.anchors)Result
['Date', 'Scan Information']
Refernece:
Download python-qrcode library for github
Install dependent library “image”
pip install Image
Jump to python-qrcode
Create example.py under folder of python-qrcode.
Type two kind of code as following example.
import qrcode
img = qrcode.make('http://python.org')
img.show()Advanced qrcode example
import qrcode
qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=10,
border=4,
)
qr.add_data('Some data')
qr.make(fit=True)
img = qr.make_image()
img.show()Reference:
Jump to C:\Users\Administrator\AppData\Local\Programs\Python\Python35\Scripts
Type following command
Upgrade pip from pip-8.1.1 to pip-9.0.1
python -m pip install –upgrade pip
pip install pyvisa
Reference:
Download the package
rabbitvcs-0.16.tar.gz
Install pysvn package
Refer [Python] How to compile pysvn
Start rabbitvcs log function
~/rabbitvcs-0.16/rabbitvcs/ui
python2.7 log.py ~/workspace/trunk
Now easy to compare different version by rabbitvcs log function.
Reference:
Download package
wget http://tigris.org/files/documents/1233/49465/pysvn-1.8.0.tar.gz
Decompress and jump into the folder
cd pysvn-1.8.0/Source
Start to configurate && compile
python2.7 setup.py configure
make
Under current folder will create a folder was called pysvn
cp -r pysvn /usr/lib/python2.7/site-packages/
Reference:
# Open file for reading in text mode (default mode)
f1 = open('/home/freeman/tftp/defalut_config.txt', 'r', errors='replace')
f2 = open('/home/freeman/tftp/NonVolValue.txt', 'r', errors='replace')
# Print confirmation
print("-----------------------------------")
print (f1)
print (f2)
print("-----------------------------------")
# Read the first line from the files
f1_line = f1.readline()
f2_line = f2.readline()
# Initialize counter for line number
line_no = 1
# Loop if either file1 or file2 has not reached EOF
while f1_line != '' or f2_line != '':
# Strip the leading whitespaces
f1_line = f1_line.rstrip()
f2_line = f2_line.rstrip()
# Compare the lines from both file
if f1_line != f2_line:
# If a line does not exist on file2 then mark the output with + sign
if f2_line == '' and f1_line != '':
print(">+", "Line-%d" % line_no, f1_line)
# otherwise output the line on file1 and mark it with > sign
elif f1_line != '':
print(">", "Line-%d" % line_no, f1_line)
# If a line does not exist on file1 then mark the output with + sign
if f1_line == '' and f2_line != '':
print("<+", "Line-%d" % line_no, f2_line)
# otherwise output the line on file2 and mark it with < sign
elif f2_line != '':
print("<", "Line-%d" % line_no, f2_line)
# Print a blank line
print()
#Read the next line from the file
f1_line = f1.readline()
f2_line = f2.readline()
#Increment line counter
line_no += 1
# Close the files
f1.close()
f2.close()
import sys
import time
import logging
from watchdog.observers import Observer
from watchdog.events import LoggingEventHandler
if __name__ == "__main__":
logging.basicConfig(level=logging.INFO,
format='%(asctime)s - %(message)s',
datefmt='%Y-%m-%d %H:%M:%S')
path = sys.argv[1] if len(sys.argv) > 1 else '.'
event_handler = LoggingEventHandler()
observer = Observer()
observer.schedule(event_handler, path, recursive=True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()$ pip install -U pyvisa
Collecting pyvisa
Downloading PyVISA-1.8.tar.gz (429kB)
100% |█████████████████████████████
Reference:
In file included from src/module.c:24:
src/connection.h:33:21: error: sqlite3.h: No such file or directory
In file included from src/module.c:24:
src/connection.h:38: error: expected specifier-qualifier-list before ‘sqlite3’
In file included from src/module.c:25:
src/statement.h:37: error: expected specifier-qualifier-list before ‘sqlite3’
src/module.c: In function ‘module_complete’:
src/module.c:101: warning: implicit declaration of function ‘sqlite3_complete’
src/module.c: In function ‘init_sqlite’:
src/module.c:400: warning: implicit declaration of function ‘sqlite3_libversion’
src/module.c:400: warning: passing argument 1 of ‘PyString_FromString’ makes pointer from integer without a cast
/usr/local/include/python2.7/stringobject.h:63: note: expected ‘const char *’ but argument is of type ‘int’
error: command 'gcc' failed with exit status 1
root@freeman-laptop:/home/freeman/sdk2_er5/yocto_meta_2.0.0.5/build# python -c 'import pysqlite2'
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named pysqlite2root@freeman-laptop:/home/freeman/sdk2_er5/yocto_meta_2.0.0.5/build# python -c 'import pysqlite2'
[python] ping6 to Ipv6
#coding:utf8
import os
import threading
import Queue
queue = Queue.Queue()
address = ['2001:730:1f:462::2'] # 2001:730:1f:462::2 = CNR
_thread = 1
for ip in address:
queue.put(ip) #将IP放入队列中。函数中使用q.get(ip)获取
def check(i,q):
while True:
ip=q.get() #获取Queue队列传过来的ip，队列使用队列实例queue.put(ip)传入ip，通过q.get() 获得
print "Thread %s:Pinging %s" %(i,ip)
data = os.system("ping6 -c 1 %s > /dev/null 2>&1" % ip)#使用os.system返回值判断是否正常
if data==0:
print "%s:正常运行" % ip
else:
print "%s:停止工作" % ip
q.task_done() #表示queue.join()已完成队列中提取元组数据
for i in range(_thread):#线程开始工作
run=threading.Thread(target=check,args=(i,queue)) #创建一个threading.Thread()的实例，给它一个函数和函数的参数
run.setDaemon(True)#这个True是为worker.start设置的，如果没有设置的话会挂起的，因为check是使用循环实现的
run.start() #开始线程的工作
queue.join()#线程队列执行关闭
print "ping 工作已完成"
Reference :
