I'm using Python 3.4 and PyQt 5. I have written a while look Inside PyQt form. If the loop contains a single statement, it's working. But if the loop contains multiple statements, it's throwing an indentation error.
Below is working:
while count > 0: print("count value",count)
Below is throwing an indentation error:
while count>0:
print("count value", count)
count = count -1
Please help me to solve the problem. The same code is working if I run it outside PyQt form code.
Related
I have inherited a data analysis script written in Python2, which I am trying to update so it runs on Spyder with Python3. When I run the script on Spyder (on MacOS), the following section:
# Split filename info
f_split1 = string.split(f,in_delim1) #first pass, splits by ' - '
f_split2 = string.split(f_split1[0],in_delim2) #second pass, splits by '_'
sID = f_split2[0]
gives me this error:
AttributeError: module 'string' has no attribute 'split'
I know from reading on StackOverflow that the string bit is obsolete in Version 3, but I am not sure how to update the code and keep the (f,in_delim1) parts.
I'm pretty new to coding and any help updating this is much appreciated. Thanks!
I am running below the addition of two numbers in jupyter
'''
This program `summationoftwonumbers` and displays their results
'''
A = 1
B = 5
print('Sum of Numbers:',A+B)
It is running fine giving an output as "Sum of Numbers: 6"
But when running a file by using PyLint, summationoftwonumber.ipynb gives the below errors.
summationoftwonumbers.ipynb:1:0: C0114: Missing module docstring (missing-module-docstring)
summationoftwonumbers.ipynb:1:0: W0104: Statement seems to have no effect (pointless-statement)
I do not understand why this is happening.
It's that you used quotes to write a comment, which in some cases creates a docstring. Python is warning you that the statement has no effect in your program. To get rid of the warning you could rewrite the line:
''' This program summationoftwonumbers and displays their results '''
as a normal comment:
# This program summationoftwonumbers and displays their results
I am connected to an Excel application and can execute the "Debug"->"Compile VBAProject" from my Python code using win32com like so (inspired by code from here):
from win32com import client
def compile(self):
self.__excel = client.GetActiveObject("Excel.Application")
compile_button = self.__excel.VBE.CommandBars.FindControl(1, 578)
compile_button.Execute()
If there is a compilation error in the Excel VBA code I get a popup message in Excel telling me the error just fine.
Now I would like to check from the Python code if there was a compilation error and raise an exception if there was. I don't necessarily need the compilation error to be part of the exception but if that were possible I would of course gladly take that, too.
Can this be done somehow?
I've been experimenting with all kinds of window counts before and after the compilation etc. but so far have not found a property of any object that would indicate that there was a popup or a compilation error.
Ok, I found a somewhat ugly but doable way - that I would like to document for others having the same issue:
You need to import a code file into the opened Excel file that has (at least) one function defined. Then you can call this function from your Python code and catch any exception. If there was an exception your code - including the imported file - did not compile, if there is none the compilation was pass.
Here's my code:
compile_code.bas
Public Sub compileCode()
' doesn't need to do anything, it just needs to be available!
End Sub
Python file
from win32com import client
def compile(self) -> bool:
self.__excel = client.GetActiveObject("Excel.Application")
self.__book = self.__excel.ActiveWorkbook
self.__book.VBProject.VBComponents.Import(<Path_to_compile_code.bas>)
try:
self.__excel.Application.Run("compileCode")
# if you reach here the code compiled
return True
except Exception:
return False
count = [0]*1001
count[1000] = 0
Getting this issue on LeetCode, and ran into this. I would expect the above to create 1001 elements, or 0 to 1000 valid positions. But getting a list index error instead.
i've ran your code in the command line with python 3.8.0 and no IndexError was flagged? Is this the exact code your getting the error from or is a similar example to the code you're using?
I'm trying to scrape the MTA website and need a little help scraping the "Train Lines Row." (Website for reference: https://advisory.mtanyct.info/EEoutage/EEOutageReport.aspx?StationID=All
The train line information is stored as image files (1 line subway, A line subway, etc) describing each line that's accessible through a particular station. I've had success scraping info out of rows in which only one train passes through, but I'm having difficulty figuring out how to iterate through the columns which have multiple trains passing through it...using a conditional statement to test for whether it has one line or multiple lines.
tableElements = table.find_elements_by_tag_name('tr')
that's the table i'm iterating through
tableElements[2].find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_element_by_tag_name('img').get_attribute('alt')
this successfully gives me the values if only one value exists in the particular column
tableElements[8].find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img')
this successfully gives me a list of values I can successfully iterate through to extract my needed values.
Now I try and combine these lines of code together in a forloop to extract all the information without stopping.
for info in tableElements[1:]:
if info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img')[1] == True:
for images in info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img'):
print(images.get_attribute('alt'))
else:
print(info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_element_by_tag_name('img').get_attribute('alt'))
I'm getting the error message: "list index out of range." I dont know why, as every iteration done in isolation seems to work. My hunch is I haven't correctly used the boolean operation properly here. My idea was that if find_elements_by_tag_name had an index of [1] that would mean multiple image text for me to iterate through. Hence, why I want to use this boolean operation.
Hi All, thanks so much for your help. I've uploaded my full code to Github and attached a link for your reference: https://github.com/tsp2123/MTA-Scraping/blob/master/MTA.ElevatorData.ipynb
The end goal is going to be to put this information into a dataframe using some formulation of and having a for loop that will extract the image information that I want.
dataframe = []
for elements in tableElements:
row = {}
columnName1 = find_element_by_class_name('td')
..
Your logic isn't off here.
"My hunch is I haven't correctly used the boolean operation properly here. My idea was that if find_elements_by_tag_name had an index of [1] that would mean multiple image text for me to iterate through."
The problem is it can't check if the statement is True if there's nothing in index position [1]. Hence the error at this point.
if info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img')[1] == True:
What you want to do is use try: So something like:
for info in tableElements[1:]:
try:
if info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img')[1] == True:
for images in info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_elements_by_tag_name('img'):
print(images.get_attribute('alt'))
else:
print(info.find_elements_by_tag_name('td')[1].find_element_by_tag_name('h4').find_element_by_tag_name('img').get_attribute('alt'))
except:
#do something else
print ('Nothing found in index position.')
Is it also possible to back to your question and provide the full code? When I try this, I'm getting 11 table elements, so want to test it with the specific table you're trying to scrape.