Python f Examples

Example #1

def zip_import():
    import zipfile, tempfile, os, sys
    handle, fname = tempfile.mkstemp(".zip")
    os.close(handle)
    z = zipfile.ZipFile(fname, "w")
    z.writestr("hello.py", "def f(): return 'hello world from ' + __file__\n")
    z.close()
    sys.path.insert(0, fname)  # zip路径加入

    import hello  # 导入模块
    print hello.f()
    os.unlink(fname)

Example #2

File: test.py Project: chenhh/PySPPortfolio

def testf():
    t = time.time()
    for i in xrange(1000000):
        fpy(i)
    print time.time()-t
    
    t= time.time()
    for i in xrange(1000000):
        f(i)
    print time.time()-t
    
    t= time.time()
    for i in xrange(1000000):
        f2(i)
    print time.time()-t

Example #3

def testf():
    t = time.time()
    for i in xrange(1000000):
        fpy(i)
    print time.time() - t

    t = time.time()
    for i in xrange(1000000):
        f(i)
    print time.time() - t

    t = time.time()
    for i in xrange(1000000):
        f2(i)
    print time.time() - t

Example #4

File: cook_2.py Project: xin-change-the-world/python-cookbook

for filename in z.namelist():
    print 'File:',filename,
    bytes = z.read(filename)
    print 'has', len(bytes), 'bytes'
#zipfile模块现在还不能处理分卷zip文件和带有注释的zip文件，注意，要使用r作为标志参数，而不是rb
#如果zip文件中包含一些Python模块，（.py或.pyc）也许还有一些其他数据文件，可以把这个文件的路径加入到Python的sys.path中
#并用import语句来导入处于这个zip文件中的模块。示例：
import zipfile, tempfile, os, sys
handle, filename = tempfile.mkstemp('.zip')
os.close(handle)
z = zipfile.ZipFile(filename, 'w')
z.writestr('hello.py', 'def f():return "hello world from "+__file__\n')
z.close()
sys.path.insert(0, filename)
import hello
print hello.f()
os.unlink(filename)
'''
2.10 处理字符串中的zip文件
'''
#解决这种问题，正是Python标准库的cStringIO模块的拿手好戏
import cStringIO, zipfile
class ZipString(ZipFile):
    def __init__(self, datastring):
        ZipFile.__init__(self, cStringIO.StringIO(datastring))
#cStringIO模块可以将一串字节封装起来，让你像访问文件对象一样访问其中的数据
import zipfile
try:
    from cStringIO import StringIO
except ImportError:
    from StringIO import StringIO

Example #5

File: test_hello.py Project: jminh/coverage_intro

 def test_f(self):
     result = f(True, False)
     self.assertEqual(result, 1)

Example #6

File: import_hello.py Project: renzon/python-birds-t5

import hello
from pessoas import Pessoa

print(type(hello))

hello.f()

print(type(Pessoa()))

Example #7

File: test.py Project: chenhh/PySPPortfolio

'''
from hello import say_hello_to, f, f2
import time

def fpy(x):
    return x**2-x


def testf():
    t = time.time()
    for i in xrange(1000000):
        fpy(i)
    print time.time()-t
    
    t= time.time()
    for i in xrange(1000000):
        f(i)
    print time.time()-t
    
    t= time.time()
    for i in xrange(1000000):
        f2(i)
    print time.time()-t

if __name__ == '__main__':
    say_hello_to("Chenhh")
    print f(10)
    testf()

    

Example #8

File: files_import_zip_with_py.py Project: zkbhj/learntosolveit

def import_and_run_module():
    import hello
    print hello.f()

Example #9

File: test2.py Project: airyou/test_cython

def f(x):
    return x**2-x

def integrate_f(a, b, N):
    s = 0
    dx = (b-a)/N
    for i in range(N):
        s += f(a+i*dx)
    return s * dx

s = time.time()
integrate_f(10**7, 10**7, 10**7)
print(time.time() - s)

s = time.time()
cy.integrate_f(10**7, 10**7, 10**7)
print(time.time() - s)

s = time.time()
cy.integrate_f2(10**7, 10**7, 10**7)
print(time.time() - s)

s = time.time()
cy.integrate_f3(10**7, 10**7, 10**7)
print(time.time() - s)

cy.f(2)
cy.f2(2)
#cy.f3(2) #cdefで定義しているのでpython側からは見えない。

Example #10

'''
from hello import say_hello_to, f, f2
import time


def fpy(x):
    return x**2 - x


def testf():
    t = time.time()
    for i in xrange(1000000):
        fpy(i)
    print time.time() - t

    t = time.time()
    for i in xrange(1000000):
        f(i)
    print time.time() - t

    t = time.time()
    for i in xrange(1000000):
        f2(i)
    print time.time() - t


if __name__ == '__main__':
    say_hello_to("Chenhh")
    print f(10)
    testf()