[Solved] Determining the First Digit

raw_input returns a string. Strings are never equal to numbers. >>> ‘0’ == 0 False Compare the string with a string. For example, to check whether the string starts with specific character (sub-string), using str.startswith: if number.startswith(‘0’): … solved Determining the First Digit

[Solved] Recursive function:What is the difference between C++ and Python?

The C++ code doesn’t work perfectly. It’s undefined behavior and everything can happen. That includes working, just suddenly stopping to work tomorrow, or on Christmas eve and delete all your files… C++ standard draft n4527 (6.6.3/2 [stmt.return]): The expression or braced-init-list of a return statement is called its operand. A return statement with no operand … Read more

[Solved] How to fix indentation errors? [closed]

This should fix indentation to be inline with your code. Check this page out for python indentation best practices. def Barchart(id, title, data): bar_chart = pygal.Bar() bar_chart.title = title data_cols = data.split(‘:’) for x in range(0, len(data_cols)): data_num = [] data_cols_split = data_cols[x].split(‘,’) for y in range(1, len(data_cols_split)): print(data_cols_split[y]) data_num.append(int(data_cols_split[y])) bar_chart.add(str(data_cols_split[0]), data_num) bar_chart.render_to_png(‘barchart.png’) s3 = … Read more

[Solved] how to make this code to become module

According to the docs, a module is a file containing Python definitions and statements. The file name is the module name with the suffix .py appended. You can import modules by simply using import moduleNameHere. Your problem could be that you want to create a package, not a module. Again, according to the docs, packages … Read more

[Solved] Python int() to the nearest value

int() truncates float values, removing the non-integral portion of the number. You are looking for rounding instead. You can use the round() function for that: >>> round(4.99) 5 solved Python int() to the nearest value

[Solved] Why is rounding done like this? [closed]

You should have a look at how floats are handled, and what limitations they have. https://docs.python.org/3/tutorial/floatingpoint.html is a Python specific explanation. In your particular example, Python chooses to use a representation that has a limited number of digits (depends on the Python version). Internally, different float values may share the same (rounded) representation. 0 solved … Read more

[Solved] TutorialsPoint – Flask – SQLAlchemy not working

The tutorial has an indentation problem in the student class. The constructor code should be indented one level so it becomes a method of the student class. Corrected code: (note the indent of “def init(self, name, city, addr,pin):” in the code below) class students(db.Model): id = db.Column(‘student_id’, db.Integer, primary_key = True) name = db.Column(db.String(100)) city … Read more

[Solved] Print all possible combinations, given a specific number format [closed]

Try this: with open(‘file.out’, ‘w’) as output: for n in xrange(100000000): s = “{0:08d}”.format(n) output.write(s[:2] + ‘-‘ + s[2:] + ‘\n’) … But be aware that that’s a lot of combinations, it’s possible that you’ll run out of memory, and if not anyway the resulting file will be huge and the program will take a … Read more