python capitalize first letter only

Question

I am aware  capitalize   capitalizes the first letter of a string but what if the first character is a integer   this  1bob 5sandy   to this  1Bob 5Sandy

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You can replace the first letter  preceded by a digit  of each word using regex     re sub r   d w    lambda w  w group   upper     1bob 5sandy    output   1Bob 5Sandy

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def solve s    names   list s split  quot   quot    return  quot   quot  join  i capitalize   for i in names     Takes a input like your name  john doe   Returns the first letter capitalized  if first character is a number  then no capitalization occurs    works for any name length

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def solve s       for i in s    split            s   s replace i  i capitalize        return s  This is the actual code for work   title   will not work at  12name  case

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a one-liner      join sub  1  upper     sub 1   for sub in text split

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If the first character is an integer  it will not capitalize the first letter    gt  gt  gt   2s  capitalize    2s    If you want the functionality  strip off the digits  you can use  2  isdigit   to check for each character    gt  gt  gt  s    123sa   gt  gt  gt  for i  c in enumerate s           if not c isdigit                break       gt  gt  gt  s  i    s i   capitalize    123Sa

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This is similar to  Anon s answer in that it keeps the rest of the string s case intact  without the need for the re module   def sliceindex x       i   0     for c in x          if c isalpha                i   i   1             return i         i   i   1  def upperfirst x       i   sliceindex x      return x  i  upper     x i    x    0thisIsCamelCase   y   upperfirst x   print y    0ThisIsCamelCase   As  Xan pointed out  the function could use more error checking  such as checking that x is a sequence - however I m omitting edge cases to illustrate the technique   Updated per  normanius comment  thanks    Thanks to  GeoStoneMarten in pointing out I didn t answer the question  -fixed that

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Only because no one else has mentioned it    gt  gt  gt   bob  title    Bob   gt  gt  gt   sandy  title    Sandy   gt  gt  gt   1bob  title    1Bob   gt  gt  gt   1sandy  title    1Sandy    However  this would also give   gt  gt  gt   1bob sandy  title    1Bob Sandy   gt  gt  gt   1JoeBob  title    1Joebob    i e  it doesn t just capitalize the first alphabetic character   But then  capitalize   has the same issue  at least in that  joe Bob  capitalize       Joe bob   so meh

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I came up with this   import re  regex   re compile   A-Za-z      find a alpha str    1st str  s   regex search str  group     find the first alpha str   str replace s  s upper    1    replace only 1 instance print str

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Here is a one-liner that will uppercase the first letter and leave the case of all subsequent letters   import re  key    wordsWithOtherUppercaseLetters  key   re sub    a-zA-Z     lambda x  x groups   0  upper    key  1  print key   This will result in WordsWithOtherUppercaseLetters

User · Answer

As seeing here answered by Chen Houwu  it s possible to use string package   import string string capwords  they re bill s friends from the UK    gt  gt  gt  They re Bill s Friends From The Uk

[python] python capitalize first letter only

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