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Discover how to represent, manipulate, and structure data in Python with sequences of operations and different data types. Learn Boolean, integer, floating point, strings, arithmetic operations, and more. Enhance your Python skills in data management.
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CSCI 1001 overview of computer science PYTHON I
represent data manipulatedata construct sequences of operations collect data presentdata organize and structure data
Boolean: True, False Integer: -1048, 0xA375, 0b1101 Floating point: 3.14159, 6.02e23 Strings (of ascii text): “This is a python string” ‘so is this.\t with a tab!’ ‘Just 1 backslash: \\’
assignment: variable = value. age = 30 name = ‘justin’ arithmetic: +, *, -, /, ** lower = age/2 + 7 string manipulation: email = lastname[0:4]+‘0001’ functions: c = math.sqrt(a**2 + b**2)
sequence: in order: age = 30 lower = age/2 + 7 conditional: if age < lower: print “age is less” else: print “age is more”
iterative: while score < 10: print score score = score + 1 for score in range(1,10): print score
for day in range(0,7): if day == 0: print “black” if day == 1 or day == 2: print “heart attack” if day ==3: print “never looking back.” if day == 4: print “I’m in love” if day == 5: print “wait.” if day == 6: print “too late.”
functions: def area(r): return 3.14 * r * r def example(n): for i in range(1,n+1): print i return example(1) example(10)
input: n = raw_input(‘enter a number:’) output: print ‘string’, 7, 3.14, True
lists: [‘a’, ‘b’, ‘c’], [] dictionaries: dict[‘key’] = ‘value’ tuples: (‘a’, ‘b’, ‘c’)
import sys count = 0 for age in sys.stdin: if (int(age) >= 21): count = count + 1 print count n = int(raw_input()) sum = 0 for i in range(1,n+1): sum = sum + i print sum
http://cs1001.us/ Please read Sections 1 and 2 of the Python chapter for Monday