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Upgrade python packages from requirements.txt using pip command

How do I upgrade all my python packages from requirements.txt file using pip command? 13 Answers ...
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Python Selenium accessing HTML source

...w can I get the HTML source in a variable using the Selenium module with Python? 8 Answers ...
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Looping over a list in Python

...n(x)==3: ... print x ... [1, 2, 3] [8, 9, 10] or if you need more pythonic use list-comprehensions >>> [x for x in mylist if len(x)==3] [[1, 2, 3], [8, 9, 10]] >>> share | ...
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Why I cannot cout a string?

...<iostream> but had forgetten <string>. I'm used to working on linux w/ gcc which would have complained that std::string is not defined. Your comment explains perfectly why we instead got the complaint about the operator. Thanks!! – Daniel Goldfarb ...
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How to check if an object is a generator object in python?

In python, how do I check if an object is a generator object? 9 Answers 9 ...
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Generate 'n' unique random numbers within a range [duplicate]

I know how to generate a random number within a range in Python. 4 Answers 4 ...
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usr/bin/ld: cannot find -l

...============================================== attempt to open /usr/x86_64-linux-gnu/lib64/libzlib.so failed attempt to open /usr/x86_64-linux-gnu/lib64/libzlib.a failed attempt to open /usr/local/lib64/libzlib.so failed attempt to open /usr/local/lib64/libzlib.a failed attempt to open /lib64/libzli...
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

...to functions as described in the section more on defining functions in the Python documentation. The *args will give you all function parameters as a tuple: def foo(*args): for a in args: print(a) foo(1) # 1 foo(1,2,3) # 1 # 2 # 3 The **kwargs will give you all keyword arg...
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How to check if a float value is a whole number

...gt; (1.555).is_integer() False The method was added to the float type in Python 2.6. Take into account that in Python 2, 1/3 is 0 (floor division for integer operands!), and that floating point arithmetic can be imprecise (a float is an approximation using binary fractions, not a precise real num...
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Python Request Post with param data

...t'll set the correct Content-Header too; all you need to do is pass in the Python object to be encoded as JSON into the json keyword argument. You could split out the URL parameters as well: params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1} the...