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Iteratorsfor x in range(5):print(x)Internally, this is implemented as:it = iter(range(5))while True:try:x = next(it)print(x)except StopIteration:breakan iterable (provides the __iter__() method)Lecture 1240
Generator Functions/Expressions:A Convenient Shortcut to Building Iteratorsdef squares(n):for i in range(n):yield i*iEquivalent generator expression:>>> (i * i for i in range(n))>>> for i in squares(5):... print(i, end = ‘ ‘)0 1 4 9 16>>> s = squares(5)>>> next(s) => 0>>> next(s) => 1>>> next(s) => 4Lecture 1241
Page 3: Python: Important Features• Pytho
Page 6 and 7: The Python Interpreter: Help()>>> h
Page 8 and 9: The Python Interpreter: Keywordshel
Page 10 and 11: The Python Interpreter: Moduleshelp
Page 12 and 13: Built-in Types: Basic• integers,
Page 14 and 15: Integers>>> int>>> 10241024>>> int(
Page 16 and 17: Floating Point>>> float>>> 3.14, 3.
Page 19 and 20: List (Mutable)>>> [] #empty list >>
Page 21 and 22: Set (Mutable) & Frozenset (Immutabl
Page 23 and 24: Dictionaries (Mutable)>>> dict >>>
Page 25 and 26: Files>>> file>>> output = open(‘/
Page 27 and 28: Assignment Forms• Basic form:- x
Page 29 and 30: Conditional Statementsif :elif :…
Page 31 and 32: Conditional Statements• There is
Page 33 and 34: For Loopssum = 0for x in [1, 2, 3,
Page 35 and 36: Functionsdef mul(x,y):return x * ym
Page 37 and 38: Lambda Expressions• Scheme:>(defi
Page 39: Iterators• An iterator is an obje
Page 43 and 44: List/Set/Dict Comprehensions• Map
Page 45 and 46: Errors & Exceptions• Syntax error
Page 47 and 48: Modules• Python has a way to put
Page 49: Readings• Reading assignment:- Ch

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