Willkommen zum Kurs!

Einführung in das Importieren von Daten in Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

Daten importieren

Flat Files, z. B. .txts, .csvs
Dateien von anderer Software

ch_1_1_v2.004.png

Daten importieren

Flat Files, z. B. .txts, .csvs
Dateien von anderer Software
Relationale Datenbanken

ch_1_1_v2.005.png

Einfache Textdateien

ch_1_1_v2.007.png

Tabellendaten

titanic.csv

                        Name      Sex  Cabin  Survived
     Braund, Mr. Owen Harris     male    NaN         0
  Cumings, Mrs. John Bradley   female    C85         1
      Heikkinen, Miss. Laina   female    NaN         1
Futrelle, Mrs. Jacques Heath   female   C123         1
    Allen, Mr. William Henry     male    NaN         0

¹ Quelle: Kaggle

Tabellendaten

titanic.csv

titanic.csv mit einer hervorgehobenen Zeile

Tabellendaten

titanic.csv

titanic.csv mit einer markierten Spalte

Flat File

Eine Textdatei lesen

filename = 'huck_finn.txt'

file = open(filename, mode='r')  # 'r' is to read

text = file.read()

file.close()

Eine Textdatei ausgeben

print(text)

YOU don't know about me without you have read a book by
the name of The Adventures of Tom Sawyer; but that 
ain't no matter. That book was made by Mr. Mark Twain,
and he told the truth, mainly. There was things which 
he stretched, but mainly he told the truth.  That is 
nothing. never seen anybody but lied one time or 
another, without it was Aunt Polly, or the widow, or 
maybe Mary. Aunt Polly--Tom's Aunt Polly, she is--and
Mary, and the Widow Douglas is all told about in that
book, which is mostly a true book, with some 
stretchers, as I said before.

In eine Datei schreiben

filename = 'huck_finn.txt'
file = open(filename, mode='w')  # 'w' is to write
file.close()

Kontextmanager mit

with open('huck_finn.txt', 'r') as file:
    print(file.read())

YOU don't know about me without you have read a book by
the name of The Adventures of Tom Sawyer; but that 
ain't no matter. That book was made by Mr. Mark Twain,
and he told the truth, mainly. There was things which 
he stretched, but mainly he told the truth.  That is 
nothing. never seen anybody but lied one time or 
another, without it was Aunt Polly, or the widow, or 
maybe Mary. Aunt Polly--Tom's Aunt Polly, she is--and 
Mary, and the Widow Douglas is all told about in that 
book, which is mostly a true book, with some 
stretchers, as I said before.

In den Übungen wirst du:

Dateien auf die Konsole ausgeben
Bestimmte Zeilen ausgeben
Über Flat Files reden

Lass uns üben!

Einführung in das Importieren von Daten in Python