United Nations Department of Economic and Social Affairs (2015) To select a DataFrame from tables, we can use the bracket operator The result, which is assigned to tables, is a sequence that contains Some of the estimates, which are expressed in millions, to be read In this case I amĪbusing the feature by treating M as a decimal point, which allows
In this case it is the first column, which contains theĭecimal: Normally this argument is used to indicate whichĬharacter should be considered a decimal point, because someĬonventions use a period and some use a comma. Index_col: Indicates which column of each table should beĬonsidered the index, that is, the set of labels that identify This case it is the first row (numbered 0). Header, that is, the set of labels that identify the columns. Header: Indicates which row of each table should be considered the This argument can also be a URL starting with http. Before we can use it, we have to import it.įilename = 'World_population_estimates.html' tables = read_html ( filename, header = 0, index_col = 0, decimal = 'M' )įilename: The name of the file (including the directory it’s in)Īs a string. The function we’ll use is read_html, which can read a web page and extract data from any tables it contains.
To read this data, we will use the Pandas library, which provides functions for The Wikipedia article on world population contains tables with estimates of world population from prehistory to the present, and projections for the future ( ). This chapter is available as a Jupyter notebook where you can read the text, run the code, and work on the exercises.Ĭlick here to access the notebooks. In this chapter and the next, we use tools from the previous chapters to model world population growth since 1950 and generate predictions for the next 50-100 years.įor background on world population growth, watch this video from the Open question how many people Earth can sustain while maintaining That agricultural production could not keep up, and that mass starvation in the next two decades was inevitable (seeĭecades, I am happy to report that those predictions were wrong.īut world population growth is still a topic of concern, and it is an Predicted that world population would grow quickly during the 1970s, In 1968 Paul Erlich published The Population Bomb, in which he
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