Flashcards : Python Data Handling and String Formatting — 20 cartes

Use `==` for equality; `cmp()` in Python 2.

A view object of all dictionary keys.

A dictionary from sequences of key-value pairs.

Accessing a non-existent dictionary key.

Insert variables into strings dynamically.

Control object representation: repr() vs str().

The `*` operator repeats strings.

[start:stop:step] to extract substrings.

Counts occurrences of a substring in a string.

Replaces substrings within a string.

Specifies file access: 'r', 'w', etc.

n characters from an open file.

A single line from a file.

Handle exceptions during file operations.

'r' for read, 'w' for write, 'b' for binary.

Int, float, string, list, tuple, dict.

List and dict are mutable; tuple is immutable.

Unordered, unique elements, supports set operations.

Start with letter/underscore, case-sensitive.

Using `def` keyword, reusable code blocks.