我试着用四个短语来概括

Question

超级初学者到这里Python。以下是我目前的代码：

def make_camel_case(word_string):
    word_list = word_string.split(’ ’)
    output = ’’
    for word in word_list:
        word_upper = word[0].upper()
        output = output+word_upper
    return(output)
def camel_case():
    phrase1 = ’purple people eater’
    phrase2 = ’i can\’t believe it\’s not butter’
    phrase3 = ’heinz 57 sauce’
    print(make_camel_case(phrase1))
    print(make_camel_case(phrase2))
    print(make_camel_case(phrase3))
camel_case()

这是我想要的结果：

purplePeopleEater
iCan’tBelieveIt’sNotButter
heinz57Sauce

我的主要错误消息是invalid character in identifier in line 2

“编辑我的代码”正确运行后，会输出：

 PPE
 ICBINB
 H5S

Answer 1

简单地说，只需使用capitalize()函数：

def make_camel_case(word_string):
    word_list = word_string.split(' ')
    output = ''

    for word in word_list:
        word_upper = word.capitalize()
        output += word_upper
    return output
def camel_case():
    phrase1 = 'purple people eater'
    phrase2 = "i can't believe it’s not butter"
    phrase3 = 'heinz 57 sauce'
    print(make_camel_case(phrase1))
    print(make_camel_case(phrase2))
    print(make_camel_case(phrase3))
camel_case()

Answer 2

您仅将word_upper变量中的第一个字符转换为大写。要获得所需的输出，您需要做两件事

1. 跳过句子的第一个单词
2. 用大写字母替换后续单词的第一个字符，并将其附加到输出中。 要实现这一点，您必须更改循环并使用enumerate()从循环(see here)获取单词索引，然后对于以后的单词，只替换第一个字符。 代码应该是

def make_camel_case(word_string):
    word_list = word_string.split(' ')
    output = ''
    for i,word in enumerate(word_list):
        if(i != 0):
          word_upper = word[0].upper()
          word = word_upper + word[1:]
        output = output + word
    return(output)
def camel_case():
    phrase1 = 'purple people eater'
    phrase2 = 'i can\'t believe it\'s not butter'
    phrase3 = 'heinz 57 sauce'
    print(make_camel_case(phrase1))
    print(make_camel_case(phrase2))
    print(make_camel_case(phrase3))
camel_case()

对于更干净的解决方案，使用@federico-baù.建议的str.capitalize()函数(see here)，然后函数会变成这样

def make_camel_case(word_string):
    word_list = word_string.split(' ')
    output = ''
    for i,word in enumerate(word_list):
        if(i != 0):
          word = word.capitalize()
        output = output + word
    return(output)

希望它能澄清你的问题。继续学习

Answer 3

第二行上的错误是由导致无效字符“”引起的。应使用单引号“”或双引号“”按空格分隔文本

然后，只需对每个单词的每个首字母执行.upper（），使其成为大写，并在结尾将所有单词合并到所需字符串中