python

问题 So I'm trying to mark checkboxes in a PDF file with pdfrw. That means changing the checkboxes "AS" value from the default "/Off" to "/Yes". pdfrw is currently forcing parentheses around my "/Yes" when it writes to file, so it doesn't work. How do I keep it from adding these parentheses? My code: template_pdf = pdfrw.PdfReader(input_pdf_path) annotations = template_pdf.pages[0][/Annots] for annotation in annotations: annotation.update(pdfrw.PdfDict(AS="/Yes")) pdfrw.PdfWriter().write(output

问题 So I'm trying to mark checkboxes in a PDF file with pdfrw. That means changing the checkboxes "AS" value from the default "/Off" to "/Yes". pdfrw is currently forcing parentheses around my "/Yes" when it writes to file, so it doesn't work. How do I keep it from adding these parentheses? My code: template_pdf = pdfrw.PdfReader(input_pdf_path) annotations = template_pdf.pages[0][/Annots] for annotation in annotations: annotation.update(pdfrw.PdfDict(AS="/Yes")) pdfrw.PdfWriter().write(output

问题 I am working on a python exercise asking for Write Python programs that read a sequence of integer inputs and print The smallest and largest of the inputs. My code so far def smallAndLarge(): num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) if num1 > num2: print(num1,"is the largest number, while",num2,"is the smallest number.") else: print(num2,"is the largest number, while",num1,"is the smallest number.") smallAndLarge() I am using def smallAndlarge(): since my

问题 So I'm trying to mark checkboxes in a PDF file with pdfrw. That means changing the checkboxes "AS" value from the default "/Off" to "/Yes". pdfrw is currently forcing parentheses around my "/Yes" when it writes to file, so it doesn't work. How do I keep it from adding these parentheses? My code: template_pdf = pdfrw.PdfReader(input_pdf_path) annotations = template_pdf.pages[0][/Annots] for annotation in annotations: annotation.update(pdfrw.PdfDict(AS="/Yes")) pdfrw.PdfWriter().write(output

问题 I am working on a python exercise asking for Write Python programs that read a sequence of integer inputs and print The smallest and largest of the inputs. My code so far def smallAndLarge(): num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) if num1 > num2: print(num1,"is the largest number, while",num2,"is the smallest number.") else: print(num2,"is the largest number, while",num1,"is the smallest number.") smallAndLarge() I am using def smallAndlarge(): since my

问题 I have the following query line: c.execute("""insert into apps (url)""") I have variable url that I try to append in query insert. But U get Mysql sintax error There are two field in table: id - autoincrement and url 回答1: The better question should be "How to substitute value in string?" as the query you are passing to the c.execute() is of the string format. Even better, "How to dynamically format the content of the string?" In python, to do that there are many ways: Using str.format() # Way

问题 I have the following query line: c.execute("""insert into apps (url)""") I have variable url that I try to append in query insert. But U get Mysql sintax error There are two field in table: id - autoincrement and url 回答1: The better question should be "How to substitute value in string?" as the query you are passing to the c.execute() is of the string format. Even better, "How to dynamically format the content of the string?" In python, to do that there are many ways: Using str.format() # Way

问题 So I am trying to plot a graph of 3 of my functions for a beam on one graph using the matplotlib module and am getting value errors when attempting to do so. The main bulk of code is: class beam(object): '''This class is models the deflection of a simply supported beam under multiple point loads, following Euler-Bernoulli theory and the principle of superposition ''' def __init__(self, E, I, L): '''The class costructor ''' self.E = E # Young's modulus of the beam in N/m^2 self.I = I # Second

问题 So I am trying to plot a graph of 3 of my functions for a beam on one graph using the matplotlib module and am getting value errors when attempting to do so. The main bulk of code is: class beam(object): '''This class is models the deflection of a simply supported beam under multiple point loads, following Euler-Bernoulli theory and the principle of superposition ''' def __init__(self, E, I, L): '''The class costructor ''' self.E = E # Young's modulus of the beam in N/m^2 self.I = I # Second

问题 I am using the following code (adapted from Resample or normalize trajectory data so points are evenly spaced) to interpolate 2D X & Y positional data (with no time index) so that the points are evenly spaced. From my understanding, the answer for that question assumed that the x values follow a certain curve or pattern (e.g. exponential curve) but that isn't the case for all my trajectories. I believe I need to interpolate X and Y separately. However, this code does not seem to produce