如何将每个句子的第一个字母大写？

看起来很多人不会在运行代码之前检查缩进或代码是否存在错误。关于句子中有其他单词需要保持大写的情况下，第一个单词的大写问题可能已经被其他回答者忽略了。如果您想要实现这一点，请尝试以下代码，它将在重复菜单上运行，直到选择退出：

# Purpose: Demonstrate string manipulation.
#
# ---------------------------------------------------------------
# Variable          Type        Purpose
# ---------------------------------------------------------------
# strSelection      string      Store value of user selection.
# strName           string      Store value of user input.
# words             string      Accumulator for loop.


def main():
    print()
    print("-----------------------------------------------------")
    print("|             String Manipulation                   |")
    print("-----------------------------------------------------")
    print()
    print("1: String Manipulation")
    print("X: Exit application")
    print()
    strSelection = input("Enter your menu selection: ")
    if strSelection == "1":
        strName = input("Enter sentence(s) of your choosing:  ")
        strSentences = ""
        words = list(strName.split(". ")) # Create list based on each sentence.
        for i  in range(len(words)): # Loop through list which is each sentence.
            words[i] = words[i].strip() # Remove any leading or trailing spaces.
            words[i] = words[i].strip(".") # Remove any periods.

            words[i] = words[i][:1].upper() + words[i][1:] # Concatenate string with first letter upper.
            strSentences += words[i] + ". " # Concatenate a final string with all sentences.

        # Print results.
        print("Sentences with first word capitalized, \
and other caps left intact: ", strSentences) 
        print()
        main() # Redisplay menu.

    # Bid user adieu.
    elif strSelection.upper() == "X":
        print("Goodbye")
    else:
        print ("Invalid selection")
        main() # Redisplay menu.

main()

这个程序用于将每个新句子的第一个单词大写。

def sentenceCapitalizer():

    string===input('Enter a sentence/sentences please:')
    sentence=string.split('.')
    for i in sentence:
        print (i.strip().capitalize()+". ",end='')
sentenceCapitalizer()

print(i.capitalize(),end='.')

也许你可以这样做：

string=input('Enter a sentence/sentences please:')
sentence='.'.join([i.capitalize() for i in string.split('.')])
print(sentence)

试试这个：

x = 'hello. how are you doing. nice to see. you'
print '.'.join(map(lambda x: x.title(), x.split('.')))