将Python脚本导入另一个？

Import Python Script Into Another?

我正在认真学习泽德肖的《学Python》，我正在上第26课。在本课中，我们必须修复一些代码，代码从另一个脚本调用函数。他说我们不需要进口它们来通过测试，但我很好奇我们会怎么做。

链接到课程链接到要更正的代码

下面是调用前一个脚本的特定代码行：

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words = ex25.break_words(sentence)
sorted_words = ex25.sort_words(words)

print_first_word(words)
print_last_word(words)
print_first_word(sorted_words)
print_last_word(sorted_words)
sorted_words = ex25.sort_sentence(sentence)
print sorted_words
print_first_and_last(sentence)
print_first_a_last_sorted(sentence)

这取决于第一个文件中的代码的结构。

如果只是一堆函数，比如：

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# first.py

def foo(): print("foo")
def bar(): print("bar")

然后您可以导入它并使用以下函数：

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# second.py
import first

first.foo() # prints"foo"
first.bar() # prints"bar"

号

或

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# second.py
from first import foo, bar

foo() # prints"foo"
bar() # prints"bar"

或者，导入first.py中定义的所有符号：

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# second.py
from first import *

foo() # prints"foo"
bar() # prints"bar"

。

注意：这假设两个文件在同一目录中。

当您想要在其他目录或模块内部导入符号(函数、类等)时，它会变得更加复杂。

相关讨论

希望这项工作

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def break_words(stuff):
"""This function will break up words for us."""
words = stuff.split(' ')
return words

def sort_words(words):
"""Sorts the words."""
return sorted(words)

def print_first_word(words):
"""Prints the first word after popping it off."""
word = words.pop(0)
print (word)

def print_last_word(words):
"""Prints the last word after popping it off."""
word = words.pop(-1)
print(word)

def sort_sentence(sentence):
"""Takes in a full sentence and returns the sorted words."""
words = break_words(sentence)
return sort_words(words)

def print_first_and_last(sentence):
"""Prints the first and last words of the sentence."""
words = break_words(sentence)
print_first_word(words)
print_last_word(words)

def print_first_and_last_sorted(sentence):
"""Sorts the words then prints the first and last one."""
words = sort_sentence(sentence)
print_first_word(words)
print_last_word(words)

print ("Let's practice everything.")
print ('You\'d need to know \'bout escapes with \\ that do
newlines and \t tabs.')

poem ="""
\tThe lovely world
with logic so firmly planted
cannot discern
the needs of love
nor comprehend passion from intuition
and requires an explantion

\t\twhere there is none.
"""

print ("--------------")
print (poem)
print ("--------------")

five = 10 - 2 + 3 - 5
print ("This should be five: %s" % five)

def secret_formula(start_point):
jelly_beans = start_point * 500
jars = jelly_beans / 1000
crates = jars / 100
return jelly_beans, jars, crates

start_point = 10000
jelly_beans, jars, crates = secret_formula(start_point)

print ("With a starting point of: %d" % start_point)
print ("We'd have %d jeans, %d jars, and %d crates." % (jelly_beans, jars, crates))

start_point = start_point / 10

print ("We can also do that this way:")
print ("We'd have %d beans, %d jars, and %d crabapples." % secret_formula(start_point))

sentence ="All god\tthings come to those who weight."

words = break_words(sentence)
sorted_words = sort_words(words)

print_first_word(words)
print_last_word(words)
print_first_word(sorted_words)
print_last_word(sorted_words)
sorted_words = sort_sentence(sentence)
print (sorted_words)

print_first_and_last(sentence)
print_first_and_last_sorted(sentence)

。