There are several things wrong with your program. First the insert method doesn’t do what you seem to think it does. list.insert(i, x) Insert an item at a given position. The first argument is the index of the element before which to insert, so a.insert(0, x) inserts at the front of the list, and a.insert(len(a), … Read more
It is not clear whether or not you need *** around the initial value of 3. If these were a failed attempt to bold the numbers, and you need the number in string format, then try: cumsum = 0 for i in lst: cumsum += int(i[3]) i[3] = str(cumsum) >>> lst [[‘Lisboa’, 36.751510873830824, 204.31859739607566, ‘3’], … Read more
Please initialize your variable as a string ‘0100’ if you require a preceding zero, not an octal number. 2 solved Avoid base 8 automatic conversion
test=”qwertyuiopasdfghjklzxcvbnm” def changestring(string): for x in ‘aeiou’: string = string.replace(x, ‘*’) return string changestring(test) ‘qw*rty***p*sdfghjklzxcvbnm’ Is this what you are trying to do? 5 solved Why can’t I return the modified str_func function back to the main function?
Unless you want to be able to launch several program at one ? import sys import subprocess def dorun(args): subprocess.Popen([sys.executable, args]) dorun(sys.argv[1]) 0 solved Python program to execute any other Python program as argument? [duplicate]
Basically it stores deltas rather than the final list; that means each operation only takes 2 reads and writes rather than (b – a + 1). Then the final max scan adds the deltas as it goes along, which is still an O(n) operation which you would have had to do anyway. n, inputs = … Read more
As mentioned in an earlier post, things that are not easy in R can be relatively simple in other languages. Another example would be connecting to Amazon Web Services. In relation to s3, although there are a number of existing packages, many of them seem to be deprecated, premature or platform-dependent. (I consider the cloudyr … Read more
Aren’t those strings containing a single word, e.g. “evaporation” & “sunlight” unigrams? It seems to me that you want to retain the unigrams, not remove them. You can do that using a list comprehension: list1 = [‘water vapor’,’evaporation’,’carbon dioxide’,’sunlight’,’green plants’] unigrams = [word for word in list1 if ‘ ‘ not in word] >>> print … Read more
You could try: r’\?id=([a-zA-Z\.]+)’ For your regex, like so: def get_id(toParse) regex = r’\?id=([a-zA-Z\.]+)’ x = re.findall(regex, toParse)[0] return x Regex – By adding r before the actual regex code, we specify that it is a raw string, so we don’t have to add multiple backslashes before every command, which is better explained here. ? … Read more
This will return the elements you want: import re s=””‘journey (a,b) from station south chennai to station punjab chandigarh journey (c,d) from station jammu katra to city punjab chandigarh journey (e) from station journey (c,d) from station ANYSTRING jammu katra to ANYSTRING city punjab chandigarh ”’ matches_single = re.findall(‘journey (\([^,]+,[^,]+\)) from (\S+ \S+\s{0,1}\S*) to (\S+ … Read more
I assume you have read in the lines and stored them in an array lines Then, set(lines) gives you a set that contains all unique lines. If every line is unique the length of lines and set(lines) will be the same. Ergo: if len(lines) == len(set(lines)): print ‘all lines are unique’ else: print ‘not all … Read more
You need to loop over b, either setting each element to the empty list or deleting the contents of that element: for i in xrange(len(b)): b[i] = [] or for i in xrange(len(b)): del b[i][:] 3 solved Delete items from list of list
While this code is not pretty to do what your’re looking to do you need to change these lines if num>0: l+='”‘+ str(k) + ‘”=’ + str(num)+’ ‘ True if True: lst+=[l] If you change it to something like if num>0: l+='”‘+ str(k) + ‘”=’ + str(num)+’ ‘ flag = True if flag: lst+=[l] and … Read more
I understand the down-votes and the closing votes, since you don’t show the slightest effort here. On the other hand, this is a non-trivial problem. I will assume for a second that you are genuinely interested in a solution to this problem and I’ll show you how I would write this (without having looked too … Read more
The error is in line 400. You are not returning anything there, which means you are returning None which cannot be unwrapped into spell, magic_dmg. 2 solved How do I resolve this python error: “TypeError: ‘NoneType’ object is not iterable”? [duplicate]