You are parsing XML that doesn’t have child nodes for that specific slidename[a] element. You probably want to skip that one. You are not using Python loops to their full potential. There is no need to loop over indices when you can loop directly over the list itself: for a in tagname: try: print a.childNodes[0].nodeValue … Read more
If I understand your question correctly, this should do the trick. arr = [] for z in np.arange(0, 0.5, 0.01): Q = a + z t = b + z # here I would like to store Q and t in an array arr.append([t,Q]) for item in arr: i = item[0] j = item[1] It … Read more
Python strings are immutable. Any operation that appears to be changing a string’s length is actually returning a new string. Definately not your third option — a string can start out arbitrary long but can’t later change it’s length. Your option 1 sounds closest. You may find the Strings subsection of this web page helpful. … Read more
Consider: print “hello world” The above statement is OK when you are using Python 2.x, because in Python 2.x, print is a statement. But in Python 3.x, print is a function and there is no way to turn it back into a statement. So you must use parentheses. So for Python 3.x, the answer is: … Read more
You can use a defaultdict as follow: class Account: def __init__(self, x, y): self.x = x self.y = y d_in = {0: Account(13, 1), 1: Account(15, 5), 2: Account(55, 1), 3: Account(33 ,1)} d_out = collections.defaultdict(list) for index, k in enumerate(d_in.keys()): d_out[d_in[k].y].append(index) print d_out Giving the following output: defaultdict(<type ‘list’>, {1: [0, 2, 3], 5: … Read more
Set example_list = list(), then do a for loop where each time you ask for input and add the value to the list via example_list.append(input_response). Extract the values back out using the same for loop to cycle through the list. example_list = list() total = 0 max_value = 0 for stored_number in example_list: # Ask … Read more
To add items to the end of a list, you want to use foodList.append(choice); This way you don’t need to worry about the indexing involved with .insert(). That means you either have to rearrange your if statements or get better acquainted with insert(): https://docs.python.org/2/tutorial/datastructures.html 5 solved How to join strings together within a list? [closed]
As others have posted, the regular expression you are looking for is: \d{4}-\d{6} The full code I would use: import re my_string = ‘Ticketing TSX – 2016-049172’ matches = re.findall(r”\d{4}-\d{6}”, my_string) print matches If, for example, the length of the second digit varies from 6 to 8 digits, you will need to update your regular … Read more
b = max(a) [1 if x==b else 0 for x in a] max(a) will return the maximum element in your list so you want to essentially replace all non-max values with 0 and all max values to 1. You can do this several ways but the above seems most to the point. Basically this is … Read more
The str.find finds the index of the item. You need to use str.count. def ex4(str4): someLetter = str4[ :1] return str4.count(someLetter) print ex4(“mldtmgm”) solved python program doesn’t work
It’s not clear why you’re using your own zip() instead of Python’s zip(), nor why you believe you need zip() at all. You can get this program to work by simplifying the code: fun_string = “””In ___0___, crazy ___1___ with ___2___, ate a meal called ___3___ on a grill””” horror_string = “””In ___0___ owned by … Read more
import subprocess subprocess.Popen([‘xterm’, ‘-hold’, ‘-e’, ‘nmap -sV 74.125.130.100’]) this is more easy to execute solved Sub-process in Python execute two task? [closed]
Just use standard shell redirection: python your_script.py > output_file.ext If you want to write to a file directly from the script without redirecting: with open(“output.ext”, “w”) as stream: print >>stream, “text” 3 solved Redirect the output of python script into a text file [duplicate]
The correct syntax is if condition: # stuff elif other: # stuff elif some_other: # stuff else: # stuff Note that else does not get any explicit condition, it is the catch-all if none of the above conditions were True. 3 solved Proper if..else syntax in Python
I don’t know Python but this is Java so hopefully you can translate it. I put the board into a two-dimensional array of int in the form board[1][2] = 16 where the class on that tile would be tile tile-16 tile-position-1-2 tile-new. I know that’s not what you asked for but you didn’t give enough … Read more