Download Introduction to Python Programming and Developing GUI by B. M. Harwani PDF

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By B. M. Harwani

Creation to Python Programming and constructing GUI functions with PyQT 1E» teaches Python programming step by step via useful examples that readers can see in motion right now. It starts with a fantastic advent of Python from scratch, masking loops, keep an eye on constructions, sequences, features, sessions, and exception dealing with. Thereafter, the publication explores dossier dealing with and GUI software improvement in PyQT, the strong cross-platform GUI structure and types builder that permits programmers to quickly layout and construct widgets and dialogs. The booklet finishes with an advent to Django, an easy-to-use platform for constructing net purposes in Python. it is a nice ebook for amateur programmers drawn to studying Python.

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Printing For printing messages and results of computations, the print()function is used with the following syntax, print(["message"][variable list]) where messageis the text string enclosed either in single or double quotes. ") print (10) print (l) print ("Length is ",l) You can display a text message, constant values, and variable’s values through the printstatement, as shown in the preceding examples. After printing the desired message/value, the print()function also prints the new-line character, meaning the cursor moves onto the next line after displaying the required message/value.

4. Addition of two complex numbers. Note The complex numbers are displayed enclosed in parentheses (). When writing programs, you come across a situation where you want to execute a block statement out of the two blocks. That is, you need to control flow of the program and execute a block statement out of available choices, depending on the prevalent conditions. Let’s see how to make decisions in Python. elsestatement. elsestatement decides which block of statements to execute on the basis of the logical expression included.

The formula is pi*r2. The rin the formula refers to radius, and its value will be supplied by the user. 54 Bitwise Operations Every numerical that is entered in a computer is internally represented in the form of binary digits. For instance, the decimal value 25 is internally represented in the form of binary digits as 11001. The bitwise operators operate on these binary digits to give desired results. Note The shifting and bitwise operators can only be applied to integers and long integers. Considering xand yas two operands, following are the shifting and bitwise operators: x << y(binary shift left): Returns xwith the bits shifted to the left by yplaces.

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