Python：如何使用一系列参数重复调用函数？

Question

Let's say I have two functions.

One has two arguments, but one of them is a keyword arg, so it doesn't come up often.

def foo(x, _y=1):
  print str(x)

The other has one argument.

def bar(x)

Ideally, It would run foo x times, each time with foo 's x argument being one larger (starting at one), until it is ran with bar 's x argument. Due to the varying number of times it should be run, as well as the fact this number may potentially be in the thousands, it wouldn't be practical to make a slightly-varying line of code for every number between 1 and x .

In other words, how would I make a function run multiple times, once for each number in range(1, x + 1) ?

Answer 1

Never mind. As Ignacio Vazquez-Abrams helpfully points out, this could be done with a simple for loop.

After all, with a simple little snippet such as:

def bar(x):
  for val in range(1, x + 1):
    foo(val)

... we get our goal, for example:

bar(5)

results in

foo(1)
foo(2)
foo(3)
foo(4)
foo(5)

(Thanks to tdelany for giving this clumsy novice a tip.)

...I really need to brush up on Python.