Entwicklung mit Python für Fortgeschrittene
Jasmin Ludolf
Senior Data Science Content Developer
# Create a custom function
def average(values):
# Calculate the average
average_value = sum(values) / len(values)
# Round the results
rounded_average = round(average_value, 2)
# Return rounded_average as an output
return rounded_average
values = Argument# Round pi to 2 digits
print(round(3.1415926535, 2))
3.14
Argumente werden angegeben, indem man keywords Werte zuweist.
Nützlich für die Interpretation und Dokumentation von Argumenten
# Round pi to 2 digits
print(round(number=3.1415926535
Argumente werden angegeben, indem man keywords Werte zuweist.
Nützlich für die Interpretation und Dokumentation von Argumenten
# Round pi to 2 digits
print(round(number=3.1415926535, ndigits=2))
3.14
# Get more information about the help function
print(help(round))
Help on built-in function round in module builtins:
round(number, ndigits=None)
Round a number to a given precision in decimal digits.
The return value is an integer if ndigits is omitted or None. Otherwise,
the return value has the same type as the number. ndigits may be negative.
Help on built-in function round in module builtins:
round(number, ndigits=None)
Round a number to a given precision in decimal digits.
The return value is an integer if ndigits is omitted or None. Otherwise
the return value has the same type as the number. ndigits may be negative.
$$
numberndigitsHelp on built-in function round in module builtins:
round(number, ndigits=None)
Round a number to a given precision in decimal digits.
The return value is an integer if ndigits is omitted or None. Otherwise,
the return value has the same type as the number. ndigits may be negative.
None = kein Wert / leer
Standardargument: Legt einen default-Wert für ein argument fest.
Wir überschreiben None mit 2
Häufig verwendeter Wert – lege ihn mit einem Standardargument fest
# Create a custom function
def average(values):
average_value = sum(values) / len(values)
rounded_average = round(average_value, 2)
return rounded_average
# Create a custom function def average(values, rounded=False):
# Create a custom function def average(values, rounded=False):# Round average to two decimal places if rounded is True if rounded == True:average_value = sum(values) / len(values) rounded_average = round(average_value, 2) return rounded_average
# Create a custom function def average(values, rounded=False):# Round average to two decimal places if rounded is True if rounded == True: average_value = sum(values) / len(values) rounded_average = round(average_value, 2) return rounded_average# Otherwise, don't round else: average_value = sum(values) / len(values) return average_value
# List of preparation times (minutes)
preparation_times = [19.23, 15.67, 48.57, 23.45, 12.06, 34.56, 45.67]
# Get the average without rounding
print(average(preparation_times, False))
28.4585714
# Get the average without rounding
print(average(preparation_times))
28.4585714
# Get the rounded average
print(average(values=preparation_times, rounded=True))
28.46
Entwicklung mit Python für Fortgeschrittene