ex26.py

#coding:utf-8
#################
# 习题26:考试
#################
# 前言
# 
# 考试内容——把exercise26.txt内容复制到py中，修改bug运行出来
# 跟着做到这里，我发誓这次我认为最简单的一次编程考试
# 以下是答案
#

import ex25
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):    # 这里少了个：
    """Prints the first word after popping it off."""
    word = words.pop(0)    # 这里应该是pop而不是poop
    print word

def print_last_word(words):
    """Prints the last word after popping it off."""
    word = words.pop(-1)    # 这里少了个）
    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 \n newlines and \t tabs.'

poem = """
\tThe lovely world
with logic so firmly planted
cannot discern \n the needs of love
nor comprehend passion from intuition
and requires an explantion
\n\t\twhere there is none.
"""


print "--------------"
print poem
print "--------------"

five = 10 - 2 + 3 - 6    # 这里计算出错了 应该-6
print "This should be five: %d" % five    # 这里%s应该改成%d

def secret_formula(started):
    jelly_beans = started * 500
    jars = jelly_beans / 1000    # 这里除号写错了
    crates = jars / 100
    return jelly_beans, jars, crates


start_point = 10000
beans, jars, crates = secret_formula(start_point)    # 这里的==因该改成= 参数名写错了应该是下划线

print "With a starting point of: %d" % start_point
print "We'd have %d jeans, %d jars, and %d crates." % (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) # 这里少了个）而且point少了个i


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

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

print_first_word(words)
print_last_word(words)
print_first_word(sorted_words)    # 这里多了个.
print_last_word(sorted_words)
sorted_words = ex25.sort_sentence(sentence)
print sorted_words    # 这里print少了个t

print_first_and_last(sentence)    # 这里函数名写错了

print_first_and_last_sorted(sentence)    # 这里函数名写错了而且参数也写错了

# 笔记
#
# 这次找bug的游戏过程中：
# 1.我发现python给的错误跟踪很好用
# 2.所以便运行边找错，这样的速度最快最好用！