python

[Solved] How to get a list in below format? [closed]

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Use strip and split as below to get the value separated as you want. file = open(‘file.txt’) my_arr = [] for line in file: fields = line.strip().split() my_arr.append([fields[0], “https://stackoverflow.com/”, fields[1][1:]]) print(my_arr) Output: [[‘22882367’, “https://stackoverflow.com/”, ‘pgc-orc-hive-output’], [‘13454914’, “https://stackoverflow.com/”, ‘pqs’], [‘2254110952’, “https://stackoverflow.com/”, ‘processed-nrt-export’]] 3 solved How to get a list in below format? [closed]

[Solved] If x = 2 y = 5 z = 0 then find values of the following expressions: a. x == 2 b. x != 5 c. x != 5 && y >= 5 d. z != 0 || x == 2 e. !(y < 10) [closed]

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There are several differences between Java and Python. One of which is the use of ‘if’ statements. In python, an ‘if’ statement follows this structure: if CONDITION: elif CONDITION: else: The operators are also slightly different. Rather than || it’s or Rather than & it’s and Boolean works similarly, except python capitalizes the first letter. … Read more

[Solved] What does if __name__ == “__main__”: do in Python?

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Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the latter script will trigger the former to run at import … Read more

[Solved] python calculating average grade from a reading file

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fin = open(“students”,”r”) for line in fin: line = line.split() if len(line) > 1: name = line[0] grades = map(float, line[1:]) mean = sum(grades) / len(grades) print( “{:<10}: {:>5.2f}”.format(name,mean) ) solved python calculating average grade from a reading file

[Solved] tokenizing and parsing with python

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To retrieve the data from the file.txt: data = {} with open(‘file.txt’, ‘r’) as f: # opens the file for line in f: # reads line by line key, value = line.split(‘ : ‘) # retrieves the key and the value data[key.lower()] = value.rstrip() # key to lower case and removes end-of-line ‘\n’ Then, data[‘name’] … Read more

[Solved] Construct a game so that two random numbers appear and the user has to choose which one is bigger

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The simplest thing you can do is ask for the value of the biggest number, and compare it to the biggest number: biggest = max(a1, a2) user_num = int(input(“What is the biggest number?”)) if user_num == biggest: print(‘Correct!’) else: print(‘Wrong! The biggest number is {}’.format(biggest)) Note the use of int() for converting the input to … Read more

[Solved] Break outside the loop

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You use break when you want to break free from a loop, to exit the loop, to jump to the nearest code after the loop. Your code doesn’t contain a loop, so nothing to break free from, hence the error. solved Break outside the loop

[Solved] == vs. in operator in Python [duplicate]

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if 0 in (result1, result2, result3): is equivalent to: if result1==0 or result2==0 or result3==0: What you want is this: if (0,0,0) == (result1, result2, result3): Which is equivalent to: if result1==0 and result2==0 and result3==0: You could actually even do this: if result1==result2==result3==0: since you’re checking to see if all 3 variables equal the … Read more

[Solved] one self for class in class

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You only defined classes inside the namespace of class User. An instance of User don’t have magically instances of the inner classes (i.e. in Python there is nothing like a inner class). So class definitions inside other classes in normally not useful. You have to give the other classes an explicit reference to your user … Read more