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Introduction to Data Analysis in Python
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Introduction to Data Analysis in Python

Introduction to Data Analysis in Python

1. Basics
What is Python?Hello, Python!CommentsChallengeMath SkillsVariablesNaming Rules and Conventions
2. Data Types
Data Types in PythonNumeric TypesWhat is a String?Multiline StringsConcatenationAccessing String ElementsWhat is a List?Updating Lists
3. Control Flow
Boolean TypeIf/else StatementsIndentationIf/elif/elseChallenge 1Challenge 2For LoopIncrementing and DecrementingWhile Loop
4. Functions and Modules
Built-in FunctionsImporting ModulesUsing ModulesChallengeDefining FunctionsChallengeLambda Functions
5. Introduction to NumPy
What is the NumPy?NumPy ArraysArrays OperationsAggregate Functions2-D ArraysAggregating in 2-D Arrays

bookWhat is a List?

One of the Sequence Types is list.

It is used to store variables: list_ = [1, 3, 6, 'a', True]. To create a list, you just need to put variables inside square brackets.

You can't name a variable as a data type: list_ is OK.

Indices

The list's first item has the index 0, the next one 1, and so on. If we start from the end, the last item has the index -1, and the second-to-last has the index -2, and so on.


              
123456

            
list_ = ['P', 'y', 't', 'h', 'o', 'n']

print('The first item is', list_[0])
print('The third item is', list_[2])
print('The fifth item is', list_[-2])
print('The last item is', list_[-1])
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question-icon

Using only negative indexation extract the symbols `c` `o` `d` `e` from the `list_code`.

list_code = ['c', 'o', 'd', 'e']
c = list_code[]
o = list_code
d = list_code
e =

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Seção 2. Capítulo 7
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