arguments

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 days ago . Improve this question Suppose a program cook takes one argument: the pathname of a text file containing the recipe of the food to cook. Suppose I wish to call this program from within a batch script, also suppose I already have the recipe in a string variable: set the_recipe = "wash cucumbers" "wash

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 days ago . Improve this question Suppose a program cook takes one argument: the pathname of a text file containing the recipe of the food to cook. Suppose I wish to call this program from within a batch script, also suppose I already have the recipe in a string variable: set the_recipe = "wash cucumbers" "wash

问题 I've been working with generics over the last few days and I encountered an issue by trying to pass generic types as parameters in events/delegates. A very friendly member of stack could bring some light into one question about generics I posted last Friday. However, I'd like to bring this up again, because I still don't understand how I am supposed to make it work correctly. In the following code you can see that I have a class "Catalog", which can raise an event, which contains a generic

问题 I have a problem with the fact that I am calling len(myByteArray) in the input arguments to a function I am declaring. I'd like that to be a default argument, but Python doesn't seem to like it. myByteArray is of type bytearray . See documentation on bytearray here. I am accessing its built-in find function, documented here (see "bytes.find"). My function: def circularFind(myByteArray, searchVal, start=0, end=len(myByteArray)): """ Return the first-encountered index in bytearray where

问题 I have a problem with the fact that I am calling len(myByteArray) in the input arguments to a function I am declaring. I'd like that to be a default argument, but Python doesn't seem to like it. myByteArray is of type bytearray . See documentation on bytearray here. I am accessing its built-in find function, documented here (see "bytes.find"). My function: def circularFind(myByteArray, searchVal, start=0, end=len(myByteArray)): """ Return the first-encountered index in bytearray where

问题 This question already has an answer here : How can I concatenate str and int objects? (1 answer) Closed 4 years ago . def main(): total = 0.0 totalcom = 0.0 name = input("Please enter your name: ") for x in range(1, 8): sales = float(input("Please enter your sales from day", x)) total += sales commission = sales * .1 totalcom += commission print("Your total sales is: ", total) print("Your commission is: ", totalcom) main() My goal is essentially a commission calculator. I am supposed to get

问题 This question already has an answer here : How can I concatenate str and int objects? (1 answer) Closed 4 years ago . def main(): total = 0.0 totalcom = 0.0 name = input("Please enter your name: ") for x in range(1, 8): sales = float(input("Please enter your sales from day", x)) total += sales commission = sales * .1 totalcom += commission print("Your total sales is: ", total) print("Your commission is: ", totalcom) main() My goal is essentially a commission calculator. I am supposed to get

问题 This question already has answers here : How to read/process command line arguments? (18 answers) Closed 2 years ago . I have a file.py that I want to pass base_url to when called, so that base_url variable value can be dynamic upon running python file.py base_url='http://google.com' the value of http://google.com could then be used directly in the execution of file.py. How might I go about doing this? Thanks 回答1: The command line arguments are stored in the list sys.argv . sys.argv[0] is the

问题 This question already has answers here : How to read/process command line arguments? (18 answers) Closed 2 years ago . I have a file.py that I want to pass base_url to when called, so that base_url variable value can be dynamic upon running python file.py base_url='http://google.com' the value of http://google.com could then be used directly in the execution of file.py. How might I go about doing this? Thanks 回答1: The command line arguments are stored in the list sys.argv . sys.argv[0] is the

问题 This question already has answers here : Normal arguments vs. keyword arguments (10 answers) Closed 6 years ago . This is an example of of code from here: What does the equality mean in the argument assignment to function? like N=20000 here? What is the difference between that and simply N as argument? import random,math def gibbs(N=20000,thin=500): x=0 y=0 samples = [] for i in range(N): for j in range(thin): x=random.gammavariate(3,1.0/(y*y+4)) y=random.gauss(1.0/(x+1),1.0/math.sqrt(x+1))